51612646332 has 24 divisors (see below), whose sum is σ = 129693316816. Its totient is φ = 15880814208.

The previous prime is 51612646313. The next prime is 51612646333. The reversal of 51612646332 is 23364621615.

51612646332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51612646332² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51612646333) 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, 165424993 + ... + 165425304.

Almost surely, 2^51612646332 is an apocalyptic number.

51612646332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51612646332 is an abundant number, since it is smaller than the sum of its proper divisors (78080670484).

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

51612646332 is a wasteful number, since it uses less digits than its factorization.

51612646332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330850317 (or 330850315 counting only the distinct ones).

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

The spelling of 51612646332 in words is "fifty-one billion, six hundred twelve million, six hundred forty-six thousand, three hundred thirty-two".