15601345851 has 48 divisors (see below), whose sum is σ = 26455172352. Its totient is φ = 7963686720.

The previous prime is 15601345843. The next prime is 15601345867. The reversal of 15601345851 is 15854310651.

It is a happy number.

It is not a de Polignac number, because 15601345851 - 2³ = 15601345843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (15601345801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232620 + ... + 292086.

It is an arithmetic number, because the mean of its divisors is an integer number (551149424).

Almost surely, 2^15601345851 is an apocalyptic number.

15601345851 is a deficient number, since it is larger than the sum of its proper divisors (10853826501).

15601345851 is a wasteful number, since it uses less digits than its factorization.

15601345851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59552 (or 59521 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 39.

The spelling of 15601345851 in words is "fifteen billion, six hundred one million, three hundred forty-five thousand, eight hundred fifty-one".