40122621256 has 16 divisors (see below), whose sum is σ = 77824050300. Its totient is φ = 19369541184.

The previous prime is 40122621223. The next prime is 40122621289. The reversal of 40122621256 is 65212622104.

It is an interprime number because it is at equal distance from previous prime (40122621223) and next prime (40122621289).

It can be written as a sum of positive squares in 2 ways, for example, as 39388753156 + 733868100 = 198466^2 + 27090^2 .

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, 86470935 + ... + 86471398.

Almost surely, 2^40122621256 is an apocalyptic number.

It is an amenable number.

40122621256 is a deficient number, since it is larger than the sum of its proper divisors (37701429044).

40122621256 is a wasteful number, since it uses less digits than its factorization.

40122621256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172942368 (or 172942364 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 40122621256 in words is "forty billion, one hundred twenty-two million, six hundred twenty-one thousand, two hundred fifty-six".