61339576321 has 4 divisors (see below), whose sum is σ = 61342728192. Its totient is φ = 61336424452.

The previous prime is 61339576313. The next prime is 61339576351. The reversal of 61339576321 is 12367593316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61339576321 - 2³ = 61339576313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61339576351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1546561 + ... + 1585726.

It is an arithmetic number, because the mean of its divisors is an integer number (15335682048).

Almost surely, 2^61339576321 is an apocalyptic number.

It is an amenable number.

61339576321 is a deficient number, since it is larger than the sum of its proper divisors (3151871).

61339576321 is a wasteful number, since it uses less digits than its factorization.

61339576321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151870.

The product of its digits is 612360, while the sum is 46.

The spelling of 61339576321 in words is "sixty-one billion, three hundred thirty-nine million, five hundred seventy-six thousand, three hundred twenty-one".