40054122578 has 18 divisors (see below), whose sum is σ = 61407099543. Its totient is φ = 19594443820.

The previous prime is 40054122553. The next prime is 40054122599. The reversal of 40054122578 is 87522145004.

It can be written as a sum of positive squares in only one way, i.e., 20027061289 + 20027061289 = 141517^2 + 141517^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=141517.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13301093 + ... + 13304103.

Almost surely, 2^40054122578 is an apocalyptic number.

40054122578 is a deficient number, since it is larger than the sum of its proper divisors (21352976965).

40054122578 is an frugal number, since it uses more digits than its factorization.

40054122578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118 (or 3060 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 38.

The spelling of 40054122578 in words is "forty billion, fifty-four million, one hundred twenty-two thousand, five hundred seventy-eight".