40642194618074 has 128 divisors (see below), whose sum is σ = 72115323840000. Its totient is φ = 17169838285824.

The previous prime is 40642194618049. The next prime is 40642194618131. The reversal of 40642194618074 is 47081649124604.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15284765357 + ... + 15284768015.

It is an arithmetic number, because the mean of its divisors is an integer number (563400967500).

Almost surely, 2^{40642194618074} is an apocalyptic number.

40642194618074 is a deficient number, since it is larger than the sum of its proper divisors (31473129221926).

40642194618074 is a wasteful number, since it uses less digits than its factorization.

40642194618074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797 (or 3783 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 40642194618074 in words is "forty trillion, six hundred forty-two billion, one hundred ninety-four million, six hundred eighteen thousand, seventy-four".