15620463768 has 256 divisors, whose sum is σ = 52228915200. Its totient is φ = 3776647680.

The previous prime is 15620463767. The next prime is 15620463779. The reversal of 15620463768 is 86736402651.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15620463767) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1280305 + ... + 1292447.

It is an arithmetic number, because the mean of its divisors is an integer number (204019200).

Almost surely, 2^15620463768 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 15620463768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26114457600).

15620463768 is an abundant number, since it is smaller than the sum of its proper divisors (36608451432).

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

15620463768 is a wasteful number, since it uses less digits than its factorization.

15620463768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12222 (or 12218 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 15620463768 in words is "fifteen billion, six hundred twenty million, four hundred sixty-three thousand, seven hundred sixty-eight".