51151002072 has 16 divisors (see below), whose sum is σ = 127877505240. Its totient is φ = 17050334016.

The previous prime is 51151002047. The next prime is 51151002073. The reversal of 51151002072 is 27020015115.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2131291753 = 51151002072 / (5 + 1 + 1 + 5 + 1 + 0 + 0 + 2 + 0 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51151002073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065645853 + ... + 1065645900.

Almost surely, 2^51151002072 is an apocalyptic number.

It is an amenable number.

51151002072 is an abundant number, since it is smaller than the sum of its proper divisors (76726503168).

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

51151002072 is a wasteful number, since it uses less digits than its factorization.

51151002072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2131291762 (or 2131291758 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 24.

Adding to 51151002072 its reverse (27020015115), we get a palindrome (78171017187).

The spelling of 51151002072 in words is "fifty-one billion, one hundred fifty-one million, two thousand, seventy-two".