40642797956 has 12 divisors (see below), whose sum is σ = 74217283392. Its totient is φ = 19437859848.

The previous prime is 40642797929. The next prime is 40642797967. The reversal of 40642797956 is 65979724604.

It is a junction number, because it is equal to n+sod(n) for n = 40642797895 and 40642797904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220884680 + ... + 220884863.

It is an arithmetic number, because the mean of its divisors is an integer number (6184773616).

Almost surely, 2^40642797956 is an apocalyptic number.

40642797956 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

40642797956 is a deficient number, since it is larger than the sum of its proper divisors (33574485436).

40642797956 is a wasteful number, since it uses less digits than its factorization.

40642797956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441769570 (or 441769568 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 40642797956 in words is "forty billion, six hundred forty-two million, seven hundred ninety-seven thousand, nine hundred fifty-six".