40558207078945 has 16 divisors (see below), whose sum is σ = 49804179004800. Its totient is φ = 31690420280064.

The previous prime is 40558207078943. The next prime is 40558207078999. The reversal of 40558207078945 is 54987070285504.

It is a cyclic number.

It is not a de Polignac number, because 40558207078945 - 2¹ = 40558207078943 is a prime.

It is a super-2 number, since 2×40558207078945² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40558207078943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 336645 + ... + 9012754.

It is an arithmetic number, because the mean of its divisors is an integer number (3112761187800).

Almost surely, 2^{40558207078945} is an apocalyptic number.

It is an amenable number.

40558207078945 is a deficient number, since it is larger than the sum of its proper divisors (9245971925855).

40558207078945 is a wasteful number, since it uses less digits than its factorization.

40558207078945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9369624.

The product of its (nonzero) digits is 112896000, while the sum is 64.

The spelling of 40558207078945 in words is "forty trillion, five hundred fifty-eight billion, two hundred seven million, seventy-eight thousand, nine hundred forty-five".