61867572940971 has 12 divisors (see below), whose sum is σ = 102130596601072. Its totient is φ = 35352898823376.

The previous prime is 61867572940963. The next prime is 61867572941021. The reversal of 61867572940971 is 17904927576816.

61867572940971 is a `hidden beast` number, since 6 + 1 + 8 + 6 + 7 + 572 + 9 + 40 + 9 + 7 + 1 = 666.

It is not a de Polignac number, because 61867572940971 - 2³ = 61867572940963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61867572940971.

It is not an unprimeable number, because it can be changed into a prime (61867572940951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491012483596 + ... + 491012483721.

Almost surely, 2^{61867572940971} is an apocalyptic number.

61867572940971 is a deficient number, since it is larger than the sum of its proper divisors (40263023660101).

61867572940971 is a wasteful number, since it uses less digits than its factorization.

61867572940971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982024967330 (or 982024967327 counting only the distinct ones).

The product of its (nonzero) digits is 320060160, while the sum is 72.

The spelling of 61867572940971 in words is "sixty-one trillion, eight hundred sixty-seven billion, five hundred seventy-two million, nine hundred forty thousand, nine hundred seventy-one".