40172997837 has 16 divisors (see below), whose sum is σ = 61308910080. Its totient is φ = 22921156272.

The previous prime is 40172997829. The next prime is 40172997883. The reversal of 40172997837 is 73879927104.

It is not a de Polignac number, because 40172997837 - 2³ = 40172997829 is a prime.

It is a super-2 number, since 2×40172997837² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40172997827) 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, 1437603 + ... + 1465280.

It is an arithmetic number, because the mean of its divisors is an integer number (3831806880).

Almost surely, 2^40172997837 is an apocalyptic number.

It is an amenable number.

40172997837 is a deficient number, since it is larger than the sum of its proper divisors (21135912243).

40172997837 is a wasteful number, since it uses less digits than its factorization.

40172997837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2903552.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 40172997837 in words is "forty billion, one hundred seventy-two million, nine hundred ninety-seven thousand, eight hundred thirty-seven".