40121625426056 has 8 divisors (see below), whose sum is σ = 75228047673870. Its totient is φ = 20060812713024.

The previous prime is 40121625426053. The next prime is 40121625426067. The reversal of 40121625426056 is 65062452612104.

It can be written as a sum of positive squares in only one way, i.e., 30306500357956 + 9815125068100 = 5505134^2 + 3132910^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 40121625425998 and 40121625426016.

It is not an unprimeable number, because it can be changed into a prime (40121625426053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2507601589121 + ... + 2507601589136.

Almost surely, 2^{40121625426056} is an apocalyptic number.

It is an amenable number.

40121625426056 is a deficient number, since it is larger than the sum of its proper divisors (35106422247814).

40121625426056 is a wasteful number, since it uses less digits than its factorization.

40121625426056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5015203178263 (or 5015203178259 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 40121625426056 in words is "forty trillion, one hundred twenty-one billion, six hundred twenty-five million, four hundred twenty-six thousand, fifty-six".