61047572764 has 72 divisors (see below), whose sum is σ = 117590185440. Its totient is φ = 27692872704.

The previous prime is 61047572683. The next prime is 61047572783. The reversal of 61047572764 is 46727574016.

It is a super-2 number, since 2×61047572764² (a number of 22 digits) contains 22 as substring.

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, 29734762 + ... + 29736814.

It is an arithmetic number, because the mean of its divisors is an integer number (1633197020).

Almost surely, 2^61047572764 is an apocalyptic number.

It is an amenable number.

61047572764 is a deficient number, since it is larger than the sum of its proper divisors (56542612676).

61047572764 is a wasteful number, since it uses less digits than its factorization.

61047572764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 61047572764 in words is "sixty-one billion, forty-seven million, five hundred seventy-two thousand, seven hundred sixty-four".