51186301672 has 32 divisors (see below), whose sum is σ = 105156496800. Its totient is φ = 23164891200.

The previous prime is 51186301667. The next prime is 51186301693. The reversal of 51186301672 is 27610368115.

It is a happy 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, 1249854 + ... + 1290157.

It is an arithmetic number, because the mean of its divisors is an integer number (3286140525).

Almost surely, 2^51186301672 is an apocalyptic number.

It is an amenable number.

51186301672 is an abundant number, since it is smaller than the sum of its proper divisors (53970195128).

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

51186301672 is a wasteful number, since it uses less digits than its factorization.

51186301672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540257 (or 2540253 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

Adding to 51186301672 its reverse (27610368115), we get a palindrome (78796669787).

The spelling of 51186301672 in words is "fifty-one billion, one hundred eighty-six million, three hundred one thousand, six hundred seventy-two".