61056115051555 has 8 divisors (see below), whose sum is σ = 78903287143632. Its totient is φ = 45087592653408.

The previous prime is 61056115051549. The next prime is 61056115051577. The reversal of 61056115051555 is 55515051165016.

It is a happy number.

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 61056115051555 - 2²⁵ = 61056081497123 is a prime.

It is a Duffinian number.

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, 469662423409 + ... + 469662423538.

It is an arithmetic number, because the mean of its divisors is an integer number (9862910892954).

Almost surely, 2^{61056115051555} is an apocalyptic number.

61056115051555 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61056115051555 is a deficient number, since it is larger than the sum of its proper divisors (17847172092077).

61056115051555 is a wasteful number, since it uses less digits than its factorization.

61056115051555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939324846965.

The product of its (nonzero) digits is 562500, while the sum is 46.

The spelling of 61056115051555 in words is "sixty-one trillion, fifty-six billion, one hundred fifteen million, fifty-one thousand, five hundred fifty-five".