61156440543034 has 64 divisors (see below), whose sum is σ = 103823894154240. Its totient is φ = 26864187356160.

The previous prime is 61156440543019. The next prime is 61156440543059. The reversal of 61156440543034 is 43034504465116.

It is a super-2 number, since 2×61156440543034² (a number of 28 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, 29975797 + ... + 31950919.

It is an arithmetic number, because the mean of its divisors is an integer number (1622248346160).

Almost surely, 2^{61156440543034} is an apocalyptic number.

61156440543034 is a deficient number, since it is larger than the sum of its proper divisors (42667453611206).

61156440543034 is a wasteful number, since it uses less digits than its factorization.

61156440543034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976215.

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 61156440543034 in words is "sixty-one trillion, one hundred fifty-six billion, four hundred forty million, five hundred forty-three thousand, thirty-four".