61629079584 has 48 divisors (see below), whose sum is σ = 161790344352. Its totient is φ = 20541247488.

The previous prime is 61629079583. The next prime is 61629079601. The reversal of 61629079584 is 48597092616.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×61629079584² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61629079583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1551232 + ... + 1590464.

It is an arithmetic number, because the mean of its divisors is an integer number (3370632174).

Almost surely, 2^61629079584 is an apocalyptic number.

It is an amenable number.

61629079584 is an abundant number, since it is smaller than the sum of its proper divisors (100161264768).

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

61629079584 is a wasteful number, since it uses less digits than its factorization.

61629079584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55609 (or 55601 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 57.

The spelling of 61629079584 in words is "sixty-one billion, six hundred twenty-nine million, seventy-nine thousand, five hundred eighty-four".