51708652490 has 16 divisors (see below), whose sum is σ = 101536990560. Its totient is φ = 18803146320.

The previous prime is 51708652487. The next prime is 51708652561. The reversal of 51708652490 is 9425680715.

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, 235039220 + ... + 235039439.

It is an arithmetic number, because the mean of its divisors is an integer number (6346061910).

Almost surely, 2^51708652490 is an apocalyptic number.

51708652490 is a deficient number, since it is larger than the sum of its proper divisors (49828338070).

51708652490 is a wasteful number, since it uses less digits than its factorization.

51708652490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470078677.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 51708652490 in words is "fifty-one billion, seven hundred eight million, six hundred fifty-two thousand, four hundred ninety".