15801424681 has 8 divisors (see below), whose sum is σ = 18105197760. Its totient is φ = 13509258288.

The previous prime is 15801424679. The next prime is 15801424697. The reversal of 15801424681 is 18642410851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15801424681 - 2¹ = 15801424679 is a prime.

It is a super-2 number, since 2×15801424681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15801424621) 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, 2898751 + ... + 2904196.

It is an arithmetic number, because the mean of its divisors is an integer number (2263149720).

Almost surely, 2^15801424681 is an apocalyptic number.

It is an amenable number.

15801424681 is a deficient number, since it is larger than the sum of its proper divisors (2303773079).

15801424681 is an equidigital number, since it uses as much as digits as its factorization.

15801424681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5803343.

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 15801424681 in words is "fifteen billion, eight hundred one million, four hundred twenty-four thousand, six hundred eighty-one".