40557138572 has 12 divisors (see below), whose sum is σ = 71148528360. Its totient is φ = 20228987616.

The previous prime is 40557138553. The next prime is 40557138577. The reversal of 40557138572 is 27583175504.

It is not an unprimeable number, because it can be changed into a prime (40557138577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12393578 + ... + 12396849.

It is an arithmetic number, because the mean of its divisors is an integer number (5929044030).

Almost surely, 2^40557138572 is an apocalyptic number.

It is an amenable number.

40557138572 is a deficient number, since it is larger than the sum of its proper divisors (30591389788).

40557138572 is a wasteful number, since it uses less digits than its factorization.

40557138572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24790840 (or 24790838 counting only the distinct ones).

The product of its (nonzero) digits is 1176000, while the sum is 47.

The spelling of 40557138572 in words is "forty billion, five hundred fifty-seven million, one hundred thirty-eight thousand, five hundred seventy-two".