40132478155 has 32 divisors (see below), whose sum is σ = 60515205120. Its totient is φ = 24820629120.

The previous prime is 40132478107. The next prime is 40132478161. The reversal of 40132478155 is 55187423104.

It is not a de Polignac number, because 40132478155 - 2¹⁵ = 40132445387 is a prime.

It is a super-2 number, since 2×40132478155² (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 31 ways as a sum of consecutive naturals, for example, 361500 + ... + 459289.

It is an arithmetic number, because the mean of its divisors is an integer number (1891100160).

Almost surely, 2^40132478155 is an apocalyptic number.

40132478155 is a deficient number, since it is larger than the sum of its proper divisors (20382726965).

40132478155 is a wasteful number, since it uses less digits than its factorization.

40132478155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820939.

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 40132478155 in words is "forty billion, one hundred thirty-two million, four hundred seventy-eight thousand, one hundred fifty-five".