15860721460 has 24 divisors (see below), whose sum is σ = 33506968320. Its totient is φ = 6306297504.

The previous prime is 15860721451. The next prime is 15860721463. The reversal of 15860721460 is 6412706851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15860721463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2371020 + ... + 2377699.

It is an arithmetic number, because the mean of its divisors is an integer number (1396123680).

Almost surely, 2^15860721460 is an apocalyptic number.

15860721460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15860721460 is an abundant number, since it is smaller than the sum of its proper divisors (17646246860).

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

15860721460 is a wasteful number, since it uses less digits than its factorization.

15860721460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748895 (or 4748893 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The spelling of 15860721460 in words is "fifteen billion, eight hundred sixty million, seven hundred twenty-one thousand, four hundred sixty".