51703494144 has 160 divisors (see below), whose sum is σ = 139439646720. Its totient is φ = 17023475712.

The previous prime is 51703494137. The next prime is 51703494149. The reversal of 51703494144 is 44149430715.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51703494096 and 51703494105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51703494149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47564769 + ... + 47565855.

It is an arithmetic number, because the mean of its divisors is an integer number (871497792).

Almost surely, 2^51703494144 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 51703494144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69719823360).

51703494144 is an abundant number, since it is smaller than the sum of its proper divisors (87736152576).

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

51703494144 is a wasteful number, since it uses less digits than its factorization.

51703494144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 51703494144 in words is "fifty-one billion, seven hundred three million, four hundred ninety-four thousand, one hundred forty-four".