40537453988 has 12 divisors (see below), whose sum is σ = 71216579532. Its totient is φ = 20189859840.

The previous prime is 40537453973. The next prime is 40537454011. The reversal of 40537453988 is 88935473504.

It can be written as a sum of positive squares in 2 ways, for example, as 34584097024 + 5953356964 = 185968^2 + 77158^2 .

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, 19715633 + ... + 19717688.

It is an arithmetic number, because the mean of its divisors is an integer number (5934714961).

Almost surely, 2^40537453988 is an apocalyptic number.

It is an amenable number.

40537453988 is a deficient number, since it is larger than the sum of its proper divisors (30679125544).

40537453988 is a wasteful number, since it uses less digits than its factorization.

40537453988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39433582 (or 39433580 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 56.

The spelling of 40537453988 in words is "forty billion, five hundred thirty-seven million, four hundred fifty-three thousand, nine hundred eighty-eight".