40138166480 has 20 divisors (see below), whose sum is σ = 93321237252. Its totient is φ = 16055266560.

The previous prime is 40138166473. The next prime is 40138166527. The reversal of 40138166480 is 8466183104.

It can be written as a sum of positive squares in 2 ways, for example, as 11284387984 + 28853778496 = 106228^2 + 169864^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×40138166480² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 250863461 + ... + 250863620.

Almost surely, 2^40138166480 is an apocalyptic number.

40138166480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40138166480 is an abundant number, since it is smaller than the sum of its proper divisors (53183070772).

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

40138166480 is a wasteful number, since it uses less digits than its factorization.

40138166480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501727094 (or 501727088 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 40138166480 in words is "forty billion, one hundred thirty-eight million, one hundred sixty-six thousand, four hundred eighty".