54597661591 has 32 divisors (see below), whose sum is σ = 60565190400. Its totient is φ = 48807321600.

The previous prime is 54597661477. The next prime is 54597661631. The reversal of 54597661591 is 19516679545.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54597661591 is a prime.

Its product of digits (10206000) is a multiple of the sum of its prime divisors (1215).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54597661891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95617336 + ... + 95617906.

It is an arithmetic number, because the mean of its divisors is an integer number (1892662200).

Almost surely, 2^54597661591 is an apocalyptic number.

54597661591 is a deficient number, since it is larger than the sum of its proper divisors (5967528809).

54597661591 is a wasteful number, since it uses less digits than its factorization.

54597661591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215.

The product of its digits is 10206000, while the sum is 58.

The spelling of 54597661591 in words is "fifty-four billion, five hundred ninety-seven million, six hundred sixty-one thousand, five hundred ninety-one".