40172997834 has 12 divisors (see below), whose sum is σ = 87041495346. Its totient is φ = 13390999272.

The previous prime is 40172997829. The next prime is 40172997883. The reversal of 40172997834 is 43879927104.

40172997834 is a `hidden beast` number, since 401 + 72 + 9 + 97 + 83 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37541000025 + 2631997809 = 193755^2 + 51303^2 .

It is a super-2 number, since 2×40172997834² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1115916589 + ... + 1115916624.

Almost surely, 2^40172997834 is an apocalyptic number.

40172997834 is an abundant number, since it is smaller than the sum of its proper divisors (46868497512).

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

40172997834 is a wasteful number, since it uses less digits than its factorization.

40172997834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231833221 (or 2231833218 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 40172997834 in words is "forty billion, one hundred seventy-two million, nine hundred ninety-seven thousand, eight hundred thirty-four".