61100605500550 has 48 divisors (see below), whose sum is σ = 141689923621632. Its totient is φ = 19044344570400.

The previous prime is 61100605500499. The next prime is 61100605500593. The reversal of 61100605500550 is 5500550600116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7935139722 + ... + 7935147421.

It is an arithmetic number, because the mean of its divisors is an integer number (2951873408784).

Almost surely, 2^{61100605500550} is an apocalyptic number.

61100605500550 is an abundant number, since it is smaller than the sum of its proper divisors (80589318121082).

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

61100605500550 is a wasteful number, since it uses less digits than its factorization.

61100605500550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15870287173 (or 15870287168 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 61100605500550 in words is "sixty-one trillion, one hundred billion, six hundred five million, five hundred thousand, five hundred fifty".