40194525656 has 64 divisors (see below), whose sum is σ = 80267673600. Its totient is φ = 18829819008.

The previous prime is 40194525643. The next prime is 40194525677. The reversal of 40194525656 is 65652549104.

It is a self number, because there is not a number n which added to its sum of digits gives 40194525656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1835186 + ... + 1856958.

It is an arithmetic number, because the mean of its divisors is an integer number (1254182400).

Almost surely, 2^40194525656 is an apocalyptic number.

40194525656 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

40194525656 is a deficient number, since it is larger than the sum of its proper divisors (40073147944).

40194525656 is a wasteful number, since it uses less digits than its factorization.

40194525656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22008 (or 22004 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 40194525656 in words is "forty billion, one hundred ninety-four million, five hundred twenty-five thousand, six hundred fifty-six".