51646207746 has 32 divisors (see below), whose sum is σ = 118208286720. Its totient is φ = 14736082896.

The previous prime is 51646207733. The next prime is 51646207771. The reversal of 51646207746 is 64770264615.

It is a junction number, because it is equal to n+sod(n) for n = 51646207695 and 51646207704.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 800946 + ... + 863021.

It is an arithmetic number, because the mean of its divisors is an integer number (3694008960).

Almost surely, 2^51646207746 is an apocalyptic number.

51646207746 is an abundant number, since it is smaller than the sum of its proper divisors (66562078974).

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

51646207746 is a wasteful number, since it uses less digits than its factorization.

51646207746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664718.

The product of its (nonzero) digits is 1693440, while the sum is 48.

The spelling of 51646207746 in words is "fifty-one billion, six hundred forty-six million, two hundred seven thousand, seven hundred forty-six".