51487546320 has 200 divisors, whose sum is σ = 204370324224. Its totient is φ = 11768571648.

The previous prime is 51487546309. The next prime is 51487546337. The reversal of 51487546320 is 2364578415.

51487546320 is a `hidden beast` number, since 5 + 1 + 4 + 8 + 7 + 5 + 4 + 632 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 522184 + ... + 612903.

Almost surely, 2^51487546320 is an apocalyptic number.

It is an amenable number.

51487546320 is an abundant number, since it is smaller than the sum of its proper divisors (152882777904).

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

51487546320 is a wasteful number, since it uses less digits than its factorization.

51487546320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135119 (or 1135104 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 51487546320 in words is "fifty-one billion, four hundred eighty-seven million, five hundred forty-six thousand, three hundred twenty".