61016611651513 has 16 divisors (see below), whose sum is σ = 74019355352064. Its totient is φ = 49100733158400.

The previous prime is 61016611651487. The next prime is 61016611651529. The reversal of 61016611651513 is 31515611661016.

It is not a de Polignac number, because 61016611651513 - 2⁵ = 61016611651481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61016611651513.

It is not an unprimeable number, because it can be changed into a prime (61016611651573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 639284745 + ... + 639380182.

It is an arithmetic number, because the mean of its divisors is an integer number (4626209709504).

Almost surely, 2^{61016611651513} is an apocalyptic number.

It is an amenable number.

61016611651513 is a deficient number, since it is larger than the sum of its proper divisors (13002743700551).

61016611651513 is a wasteful number, since it uses less digits than its factorization.

61016611651513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278665352.

The product of its (nonzero) digits is 97200, while the sum is 43.

The spelling of 61016611651513 in words is "sixty-one trillion, sixteen billion, six hundred eleven million, six hundred fifty-one thousand, five hundred thirteen".