61739063715 has 32 divisors (see below), whose sum is σ = 112908833280. Its totient is φ = 28219935744.

The previous prime is 61739063713. The next prime is 61739063719. The reversal of 61739063715 is 51736093716.

It is not a de Polignac number, because 61739063715 - 2¹ = 61739063713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61739063713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 888307 + ... + 955283.

It is an arithmetic number, because the mean of its divisors is an integer number (3528401040).

Almost surely, 2^61739063715 is an apocalyptic number.

61739063715 is a deficient number, since it is larger than the sum of its proper divisors (51169769565).

61739063715 is a wasteful number, since it uses less digits than its factorization.

61739063715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75771.

The product of its (nonzero) digits is 714420, while the sum is 48.

The spelling of 61739063715 in words is "sixty-one billion, seven hundred thirty-nine million, sixty-three thousand, seven hundred fifteen".