51887086701720 has 32 divisors (see below), whose sum is σ = 155661260105520. Its totient is φ = 13836556453760.

The previous prime is 51887086701707. The next prime is 51887086701787. The reversal of 51887086701720 is 2710768078815.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 216196194471 + ... + 216196194710.

Almost surely, 2^{51887086701720} is an apocalyptic number.

It is an amenable number.

51887086701720 is an abundant number, since it is smaller than the sum of its proper divisors (103774173403800).

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

51887086701720 is a wasteful number, since it uses less digits than its factorization.

51887086701720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432392389195 (or 432392389191 counting only the distinct ones).

The product of its (nonzero) digits is 10536960, while the sum is 60.

The spelling of 51887086701720 in words is "fifty-one trillion, eight hundred eighty-seven billion, eighty-six million, seven hundred one thousand, seven hundred twenty".