15493680001 has 4 divisors (see below), whose sum is σ = 15496649392. Its totient is φ = 15490710612.

The previous prime is 15493679987. The next prime is 15493680023. The reversal of 15493680001 is 10008639451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15493680001 - 2²⁷ = 15359462273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15493680401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1476855 + ... + 1487308.

It is an arithmetic number, because the mean of its divisors is an integer number (3874162348).

Almost surely, 2^15493680001 is an apocalyptic number.

It is an amenable number.

15493680001 is a deficient number, since it is larger than the sum of its proper divisors (2969391).

15493680001 is an equidigital number, since it uses as much as digits as its factorization.

15493680001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969390.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 15493680001 in words is "fifteen billion, four hundred ninety-three million, six hundred eighty thousand, one".