61005610555 has 8 divisors (see below), whose sum is σ = 73271927952. Its totient is φ = 48761024928.

The previous prime is 61005610537. The next prime is 61005610579. The reversal of 61005610555 is 55501650016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61005610555 - 2²³ = 60997221947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61005610555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5426764 + ... + 5437993.

It is an arithmetic number, because the mean of its divisors is an integer number (9158990994).

Almost surely, 2^61005610555 is an apocalyptic number.

61005610555 is a deficient number, since it is larger than the sum of its proper divisors (12266317397).

61005610555 is a wasteful number, since it uses less digits than its factorization.

61005610555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10865885.

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

The spelling of 61005610555 in words is "sixty-one billion, five million, six hundred ten thousand, five hundred fifty-five".