5001561620 has 36 divisors (see below), whose sum is σ = 11544932532. Its totient is φ = 1818748800.

The previous prime is 5001561563. The next prime is 5001561661. The reversal of 5001561620 is 261651005.

It can be written as a sum of positive squares in 2 ways, for example, as 1023232144 + 3978329476 = 31988^2 + 63074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5001561620.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1030961 + ... + 1035800.

Almost surely, 2^5001561620 is an apocalyptic number.

It is an amenable number.

5001561620 is an abundant number, since it is smaller than the sum of its proper divisors (6543370912).

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

5001561620 is a wasteful number, since it uses less digits than its factorization.

5001561620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066792 (or 2066779 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 5001561620 is about 70721.7195775103. The cubic root of 5001561620 is about 1710.1539503222.

The spelling of 5001561620 in words is "five billion, one million, five hundred sixty-one thousand, six hundred twenty".