1561503312060 has 24 divisors (see below), whose sum is σ = 4372209273936. Its totient is φ = 416400883200.

The previous prime is 1561503312037. The next prime is 1561503312071. The reversal of 1561503312060 is 602133051651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13012527541 + ... + 13012527660.

It is an arithmetic number, because the mean of its divisors is an integer number (182175386414).

Almost surely, 2^{1561503312060} is an apocalyptic number.

1561503312060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561503312060 is an abundant number, since it is smaller than the sum of its proper divisors (2810705961876).

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

1561503312060 is a wasteful number, since it uses less digits than its factorization.

1561503312060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26025055213 (or 26025055211 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 1561503312060 in words is "one trillion, five hundred sixty-one billion, five hundred three million, three hundred twelve thousand, sixty".