51642311288 has 16 divisors (see below), whose sum is σ = 99191025360. Its totient is φ = 25191371200.

The previous prime is 51642311267. The next prime is 51642311339. The reversal of 51642311288 is 88211324615.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78722708 + ... + 78723363.

It is an arithmetic number, because the mean of its divisors is an integer number (6199439085).

Almost surely, 2^51642311288 is an apocalyptic number.

It is an amenable number.

51642311288 is a deficient number, since it is larger than the sum of its proper divisors (47548714072).

51642311288 is a wasteful number, since it uses less digits than its factorization.

51642311288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157446118 (or 157446114 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The spelling of 51642311288 in words is "fifty-one billion, six hundred forty-two million, three hundred eleven thousand, two hundred eighty-eight".