61534836881 has 8 divisors (see below), whose sum is σ = 70327065984. Its totient is φ = 52742992320.

The previous prime is 61534836823. The next prime is 61534836887. The reversal of 61534836881 is 18863843516.

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 61534836881 - 2²² = 61530642577 is a prime.

It is a super-2 number, since 2×61534836881² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61534836887) 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, 465641 + ... + 583001.

It is an arithmetic number, because the mean of its divisors is an integer number (8790883248).

Almost surely, 2^61534836881 is an apocalyptic number.

It is an amenable number.

61534836881 is a deficient number, since it is larger than the sum of its proper divisors (8792229103).

61534836881 is a wasteful number, since it uses less digits than its factorization.

61534836881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192271.

The product of its digits is 3317760, while the sum is 53.

The spelling of 61534836881 in words is "sixty-one billion, five hundred thirty-four million, eight hundred thirty-six thousand, eight hundred eighty-one".