61513664206506 has 16 divisors (see below), whose sum is σ = 123098731410144. Its totient is φ = 20492654235984.

The previous prime is 61513664206493. The next prime is 61513664206523. The reversal of 61513664206506 is 60560246631516.

61513664206506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61513664206506² (a number of 28 digits) contains 22 as substring.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 2975113681 + ... + 2975134356.

It is an arithmetic number, because the mean of its divisors is an integer number (7693670713134).

Almost surely, 2^{61513664206506} is an apocalyptic number.

61513664206506 is an abundant number, since it is smaller than the sum of its proper divisors (61585067203638).

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

61513664206506 is a wasteful number, since it uses less digits than its factorization.

61513664206506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5950249765.

The product of its (nonzero) digits is 4665600, while the sum is 51.

The spelling of 61513664206506 in words is "sixty-one trillion, five hundred thirteen billion, six hundred sixty-four million, two hundred six thousand, five hundred six".