49487028864 has 384 divisors, whose sum is σ = 166703806080. Its totient is φ = 12728401920.

The previous prime is 49487028853. The next prime is 49487028959. The reversal of 49487028864 is 46882078494.

It is a tau number, because it is divible by the number of its divisors (384).

It is a junction number, because it is equal to n+sod(n) for n = 49487028798 and 49487028807.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18623824 + ... + 18626480.

It is an arithmetic number, because the mean of its divisors is an integer number (434124495).

Almost surely, 2^49487028864 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 49487028864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83351903040).

49487028864 is an abundant number, since it is smaller than the sum of its proper divisors (117216777216).

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

49487028864 is a wasteful number, since it uses less digits than its factorization.

49487028864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 24772608, while the sum is 60.

The spelling of 49487028864 in words is "forty-nine billion, four hundred eighty-seven million, twenty-eight thousand, eight hundred sixty-four".