51492412608 has 672 divisors, whose sum is σ = 178205294592. Its totient is φ = 12831436800.

The previous prime is 51492412603. The next prime is 51492412637. The reversal of 51492412608 is 80621429415.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 51492412608.

It is not an unprimeable number, because it can be changed into a prime (51492412603) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 499926285 + ... + 499926387.

Almost surely, 2^51492412608 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 51492412608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89102647296).

51492412608 is an abundant number, since it is smaller than the sum of its proper divisors (126712881984).

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

51492412608 is a wasteful number, since it uses less digits than its factorization.

51492412608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 51492412608 in words is "fifty-one billion, four hundred ninety-two million, four hundred twelve thousand, six hundred eight".