61277081624 has 16 divisors (see below), whose sum is σ = 125339485320. Its totient is φ = 27853218880.

The previous prime is 61277081611. The next prime is 61277081633. The reversal of 61277081624 is 42618077216.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348165149 + ... + 348165324.

Almost surely, 2^61277081624 is an apocalyptic number.

It is an amenable number.

61277081624 is an abundant number, since it is smaller than the sum of its proper divisors (64062403696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61277081624 is a wasteful number, since it uses less digits than its factorization.

61277081624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696330490 (or 696330486 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 61277081624 in words is "sixty-one billion, two hundred seventy-seven million, eighty-one thousand, six hundred twenty-four".