51944604456 has 64 divisors (see below), whose sum is σ = 137764903680. Its totient is φ = 16265000960.

The previous prime is 51944604433. The next prime is 51944604479. The reversal of 51944604456 is 65440644915.

It is an interprime number because it is at equal distance from previous prime (51944604433) and next prime (51944604479).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90385 + ... + 334751.

It is an arithmetic number, because the mean of its divisors is an integer number (2152576620).

Almost surely, 2^51944604456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51944604456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68882451840).

51944604456 is an abundant number, since it is smaller than the sum of its proper divisors (85820299224).

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

51944604456 is a wasteful number, since it uses less digits than its factorization.

51944604456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244914 (or 244910 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

The spelling of 51944604456 in words is "fifty-one billion, nine hundred forty-four million, six hundred four thousand, four hundred fifty-six".