51497013180 has 48 divisors (see below), whose sum is σ = 144218067840. Its totient is φ = 13730019648.

The previous prime is 51497013107. The next prime is 51497013181. The reversal of 51497013180 is 8131079415.

It is a super-2 number, since 2×51497013180² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51497013181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 263707 + ... + 415373.

It is an arithmetic number, because the mean of its divisors is an integer number (3004543080).

Almost surely, 2^51497013180 is an apocalyptic number.

It is an amenable number.

51497013180 is an abundant number, since it is smaller than the sum of its proper divisors (92721054660).

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

51497013180 is a wasteful number, since it uses less digits than its factorization.

51497013180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157338 (or 157336 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 39.

The spelling of 51497013180 in words is "fifty-one billion, four hundred ninety-seven million, thirteen thousand, one hundred eighty".