61648436028715 has 32 divisors (see below), whose sum is σ = 74997400697856. Its totient is φ = 48643320288000.

The previous prime is 61648436028679. The next prime is 61648436028719. The reversal of 61648436028715 is 51782063484616.

It is not a de Polignac number, because 61648436028715 - 2³⁹ = 61098680214827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61648436028719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1776441054 + ... + 1776475756.

It is an arithmetic number, because the mean of its divisors is an integer number (2343668771808).

Almost surely, 2^{61648436028715} is an apocalyptic number.

61648436028715 is a deficient number, since it is larger than the sum of its proper divisors (13348964669141).

61648436028715 is a wasteful number, since it uses less digits than its factorization.

61648436028715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49299.

The product of its (nonzero) digits is 46448640, while the sum is 61.

The spelling of 61648436028715 in words is "sixty-one trillion, six hundred forty-eight billion, four hundred thirty-six million, twenty-eight thousand, seven hundred fifteen".