61337872478 has 16 divisors (see below), whose sum is σ = 93391378704. Its totient is φ = 30207524160.

The previous prime is 61337872459. The next prime is 61337872507. The reversal of 61337872478 is 87427873316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325426 + ... + 1370922.

It is an arithmetic number, because the mean of its divisors is an integer number (5836961169).

Almost surely, 2^61337872478 is an apocalyptic number.

61337872478 is a deficient number, since it is larger than the sum of its proper divisors (32053506226).

61337872478 is a wasteful number, since it uses less digits than its factorization.

61337872478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55627.

The product of its digits is 9483264, while the sum is 56.

The spelling of 61337872478 in words is "sixty-one billion, three hundred thirty-seven million, eight hundred seventy-two thousand, four hundred seventy-eight".