61150551165 has 48 divisors (see below), whose sum is σ = 122431922496. Its totient is φ = 27904704000.

The previous prime is 61150551151. The next prime is 61150551193. The reversal of 61150551165 is 56115505116.

It is a happy number.

It is not a de Polignac number, because 61150551165 - 2⁷ = 61150551037 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 3625011 + ... + 3641840.

It is an arithmetic number, because the mean of its divisors is an integer number (2550665052).

Almost surely, 2^61150551165 is an apocalyptic number.

It is an amenable number.

61150551165 is an abundant number, since it is smaller than the sum of its proper divisors (61281371331).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61150551165 is a wasteful number, since it uses less digits than its factorization.

61150551165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266890 (or 7266887 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 36.

The spelling of 61150551165 in words is "sixty-one billion, one hundred fifty million, five hundred fifty-one thousand, one hundred sixty-five".