61047752455 has 4 divisors (see below), whose sum is σ = 73257302952. Its totient is φ = 48838201960.

The previous prime is 61047752453. The next prime is 61047752459. The reversal of 61047752455 is 55425774016.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61047752455 - 2¹ = 61047752453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61047752453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6104775241 + ... + 6104775250.

It is an arithmetic number, because the mean of its divisors is an integer number (18314325738).

Almost surely, 2^61047752455 is an apocalyptic number.

61047752455 is a deficient number, since it is larger than the sum of its proper divisors (12209550497).

61047752455 is a wasteful number, since it uses less digits than its factorization.

61047752455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12209550496.

The product of its (nonzero) digits is 1176000, while the sum is 46.

The spelling of 61047752455 in words is "sixty-one billion, forty-seven million, seven hundred fifty-two thousand, four hundred fifty-five".