15970893121 has 8 divisors (see below), whose sum is σ = 16037230464. Its totient is φ = 15904588800.

The previous prime is 15970893101. The next prime is 15970893143. The reversal of 15970893121 is 12139807951.

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 15970893121 - 2⁵ = 15970893089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15970893101) 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, 1575756 + ... + 1585858.

It is an arithmetic number, because the mean of its divisors is an integer number (2004653808).

Almost surely, 2^15970893121 is an apocalyptic number.

It is an amenable number.

15970893121 is a deficient number, since it is larger than the sum of its proper divisors (66337343).

15970893121 is a wasteful number, since it uses less digits than its factorization.

15970893121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16511.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 15970893121 in words is "fifteen billion, nine hundred seventy million, eight hundred ninety-three thousand, one hundred twenty-one".