61612653432 has 32 divisors (see below), whose sum is σ = 168034510080. Its totient is φ = 18670500960.

The previous prime is 61612653373. The next prime is 61612653449. The reversal of 61612653432 is 23435621616.

It is a super-2 number, since 2×61612653432² (a number of 22 digits) contains 22 as substring.

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, 116690368 + ... + 116690895.

It is an arithmetic number, because the mean of its divisors is an integer number (5251078440).

Almost surely, 2^61612653432 is an apocalyptic number.

It is an amenable number.

61612653432 is an abundant number, since it is smaller than the sum of its proper divisors (106421856648).

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

61612653432 is a wasteful number, since it uses less digits than its factorization.

61612653432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233381283 (or 233381279 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The spelling of 61612653432 in words is "sixty-one billion, six hundred twelve million, six hundred fifty-three thousand, four hundred thirty-two".