40789925217 has 8 divisors (see below), whose sum is σ = 60429518880. Its totient is φ = 27193283460.

The previous prime is 40789925179. The next prime is 40789925233. The reversal of 40789925217 is 71252998704.

40789925217 is a `hidden beast` number, since 40 + 78 + 9 + 9 + 2 + 521 + 7 = 666.

It is not a de Polignac number, because 40789925217 - 2¹² = 40789921121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40789925257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755368959 + ... + 755369012.

It is an arithmetic number, because the mean of its divisors is an integer number (7553689860).

Almost surely, 2^40789925217 is an apocalyptic number.

It is an amenable number.

40789925217 is a deficient number, since it is larger than the sum of its proper divisors (19639593663).

40789925217 is a wasteful number, since it uses less digits than its factorization.

40789925217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510737980 (or 1510737974 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 40789925217 in words is "forty billion, seven hundred eighty-nine million, nine hundred twenty-five thousand, two hundred seventeen".