15961338201 has 8 divisors (see below), whose sum is σ = 21354419520. Its totient is φ = 10604574512.

The previous prime is 15961338191. The next prime is 15961338257. The reversal of 15961338201 is 10283316951.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15961338201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15961338201.

It is not an unprimeable number, because it can be changed into a prime (15961338401) 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, 9078381 + ... + 9080138.

It is an arithmetic number, because the mean of its divisors is an integer number (2669302440).

Almost surely, 2^15961338201 is an apocalyptic number.

It is an amenable number.

15961338201 is a deficient number, since it is larger than the sum of its proper divisors (5393081319).

15961338201 is a wasteful number, since it uses less digits than its factorization.

15961338201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18158815.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 15961338201 in words is "fifteen billion, nine hundred sixty-one million, three hundred thirty-eight thousand, two hundred one".