61240734475 has 6 divisors (see below), whose sum is σ = 75938510780. Its totient is φ = 48992587560.

The previous prime is 61240734439. The next prime is 61240734479. The reversal of 61240734475 is 57443704216.

61240734475 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61240734475 - 2¹⁵ = 61240701707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61240734479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224814665 + ... + 1224814714.

Almost surely, 2^61240734475 is an apocalyptic number.

61240734475 is a deficient number, since it is larger than the sum of its proper divisors (14697776305).

61240734475 is a wasteful number, since it uses less digits than its factorization.

61240734475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2449629389 (or 2449629384 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 61240734475 in words is "sixty-one billion, two hundred forty million, seven hundred thirty-four thousand, four hundred seventy-five".