61339550399998 has 32 divisors (see below), whose sum is σ = 99984113371296. Its totient is φ = 28054335525888.

The previous prime is 61339550399989. The next prime is 61339550400017. The reversal of 61339550399998 is 89999305593316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12390465 + ... + 16619347.

It is an arithmetic number, because the mean of its divisors is an integer number (3124503542853).

Almost surely, 2^{61339550399998} is an apocalyptic number.

61339550399998 is a deficient number, since it is larger than the sum of its proper divisors (38644562971298).

61339550399998 is a wasteful number, since it uses less digits than its factorization.

61339550399998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233948.

The product of its (nonzero) digits is 1913187600, while the sum is 79.

The spelling of 61339550399998 in words is "sixty-one trillion, three hundred thirty-nine billion, five hundred fifty million, three hundred ninety-nine thousand, nine hundred ninety-eight".