61279888863584 has 12 divisors (see below), whose sum is σ = 120644781200244. Its totient is φ = 30639944431776.

The previous prime is 61279888863517. The next prime is 61279888863619. The reversal of 61279888863584 is 48536888897216.

It is a super-2 number, since 2×61279888863584² (a number of 28 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 as a sum of consecutive naturals, namely, 957498263462 + ... + 957498263525.

It is an arithmetic number, because the mean of its divisors is an integer number (10053731766687).

Almost surely, 2^{61279888863584} is an apocalyptic number.

It is an amenable number.

61279888863584 is a deficient number, since it is larger than the sum of its proper divisors (59364892336660).

61279888863584 is a wasteful number, since it uses less digits than its factorization.

61279888863584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1914996526997 (or 1914996526989 counting only the distinct ones).

The product of its digits is 8918138880, while the sum is 83.

The spelling of 61279888863584 in words is "sixty-one trillion, two hundred seventy-nine billion, eight hundred eighty-eight million, eight hundred sixty-three thousand, five hundred eighty-four".