61515307854168 has 64 divisors (see below), whose sum is σ = 175760695729920. Its totient is φ = 17575534915200.

The previous prime is 61515307854041. The next prime is 61515307854191. The reversal of 61515307854168 is 86145870351516.

61515307854168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 8427483 + ... + 13930293.

It is an arithmetic number, because the mean of its divisors is an integer number (2746260870780).

Almost surely, 2^{61515307854168} is an apocalyptic number.

It is an amenable number.

61515307854168 is an abundant number, since it is smaller than the sum of its proper divisors (114245387875752).

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

61515307854168 is a wasteful number, since it uses less digits than its factorization.

61515307854168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5569368 (or 5569364 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 60.

The spelling of 61515307854168 in words is "sixty-one trillion, five hundred fifteen billion, three hundred seven million, eight hundred fifty-four thousand, one hundred sixty-eight".