3540400155 has 12 divisors (see below), whose sum is σ = 6136693680. Its totient is φ = 1888213392.

The previous prime is 3540400147. The next prime is 3540400177. The reversal of 3540400155 is 5510040453.

It is not a de Polignac number, because 3540400155 - 2³ = 3540400147 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39337735 + ... + 39337824.

It is an arithmetic number, because the mean of its divisors is an integer number (511391140).

Almost surely, 2^3540400155 is an apocalyptic number.

3540400155 is a deficient number, since it is larger than the sum of its proper divisors (2596293525).

3540400155 is a wasteful number, since it uses less digits than its factorization.

3540400155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78675570 (or 78675567 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 3540400155 is about 59501.2617933435. The cubic root of 3540400155 is about 1524.1139929096.

The spelling of 3540400155 in words is "three billion, five hundred forty million, four hundred thousand, one hundred fifty-five".