61001110616556 has 24 divisors (see below), whose sum is σ = 155275554297024. Its totient is φ = 18485185035280.

The previous prime is 61001110616527. The next prime is 61001110616557. The reversal of 61001110616556 is 65561601110016.

It is a super-2 number, since 2×61001110616556² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61001110616557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231064812810 + ... + 231064813073.

It is an arithmetic number, because the mean of its divisors is an integer number (6469814762376).

Almost surely, 2^{61001110616556} is an apocalyptic number.

61001110616556 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61001110616556 is an abundant number, since it is smaller than the sum of its proper divisors (94274443680468).

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

61001110616556 is a wasteful number, since it uses less digits than its factorization.

61001110616556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462129625901 (or 462129625899 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 61001110616556 in words is "sixty-one trillion, one billion, one hundred ten million, six hundred sixteen thousand, five hundred fifty-six".