61516222104165 has 64 divisors (see below), whose sum is σ = 108757941497856. Its totient is φ = 29533161157632.

The previous prime is 61516222104121. The next prime is 61516222104191. The reversal of 61516222104165 is 56140122261516.

It is a happy number.

61516222104165 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 61516222104165 - 2⁶ = 61516222104101 is a prime.

It is a super-2 number, since 2×61516222104165² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57433152 + ... + 58494438.

It is an arithmetic number, because the mean of its divisors is an integer number (1699342835904).

Almost surely, 2^{61516222104165} is an apocalyptic number.

It is an amenable number.

61516222104165 is a deficient number, since it is larger than the sum of its proper divisors (47241719393691).

61516222104165 is a wasteful number, since it uses less digits than its factorization.

61516222104165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071218.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 61516222104165 in words is "sixty-one trillion, five hundred sixteen billion, two hundred twenty-two million, one hundred four thousand, one hundred sixty-five".