40537697808 has 20 divisors (see below), whose sum is σ = 104722386128. Its totient is φ = 13512565920.

The previous prime is 40537697797. The next prime is 40537697813. The reversal of 40537697808 is 80879673504.

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, 422267638 + ... + 422267733.

Almost surely, 2^40537697808 is an apocalyptic number.

40537697808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40537697808 is an abundant number, since it is smaller than the sum of its proper divisors (64184688320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40537697808 is a wasteful number, since it uses less digits than its factorization.

40537697808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844535382 (or 844535376 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 40537697808 in words is "forty billion, five hundred thirty-seven million, six hundred ninety-seven thousand, eight hundred eight".