61477421467742 has 64 divisors (see below), whose sum is σ = 109365550424064. Its totient is φ = 25370910845280.

The previous prime is 61477421467741. The next prime is 61477421467753. The reversal of 61477421467742 is 24776412477416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61477421467741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1338100823 + ... + 1338146765.

It is an arithmetic number, because the mean of its divisors is an integer number (1708836725376).

Almost surely, 2^{61477421467742} is an apocalyptic number.

61477421467742 is a deficient number, since it is larger than the sum of its proper divisors (47888128956322).

61477421467742 is a wasteful number, since it uses less digits than its factorization.

61477421467742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77373.

The product of its digits is 88510464, while the sum is 62.

The spelling of 61477421467742 in words is "sixty-one trillion, four hundred seventy-seven billion, four hundred twenty-one million, four hundred sixty-seven thousand, seven hundred forty-two".