61061510500500 has 48 divisors (see below), whose sum is σ = 177811118581824. Its totient is φ = 16283069466400.

The previous prime is 61061510500493. The next prime is 61061510500609. The reversal of 61061510500500 is 500501516016.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20353835334 + ... + 20353838333.

It is an arithmetic number, because the mean of its divisors is an integer number (3704398303788).

Almost surely, 2^{61061510500500} is an apocalyptic number.

61061510500500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61061510500500 is an abundant number, since it is smaller than the sum of its proper divisors (116749608081324).

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

61061510500500 is a wasteful number, since it uses less digits than its factorization.

61061510500500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40707673689 (or 40707673677 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 61061510500500 in words is "sixty-one trillion, sixty-one billion, five hundred ten million, five hundred thousand, five hundred".