61339550399990 has 16 divisors (see below), whose sum is σ = 112282566834960. Its totient is φ = 24119958801120.

The previous prime is 61339550399989. The next prime is 61339550400017. The reversal of 61339550399990 is 9999305593316.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51982669241 + ... + 51982670420.

It is an arithmetic number, because the mean of its divisors is an integer number (7017660427185).

Almost surely, 2^{61339550399990} is an apocalyptic number.

61339550399990 is a deficient number, since it is larger than the sum of its proper divisors (50943016434970).

61339550399990 is a wasteful number, since it uses less digits than its factorization.

61339550399990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103965339727.

The product of its (nonzero) digits is 239148450, while the sum is 71.

The spelling of 61339550399990 in words is "sixty-one trillion, three hundred thirty-nine billion, five hundred fifty million, three hundred ninety-nine thousand, nine hundred ninety".