15955002179961 has 16 divisors (see below), whose sum is σ = 22909928040384. Its totient is φ = 9818385171264.

The previous prime is 15955002179959. The next prime is 15955002180041. The reversal of 15955002179961 is 16997120055951.

It is not a de Polignac number, because 15955002179961 - 2¹ = 15955002179959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15955002179895 and 15955002179904.

It is not an unprimeable number, because it can be changed into a prime (15955002178961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3583495 + ... + 6689651.

It is an arithmetic number, because the mean of its divisors is an integer number (1431870502524).

Almost surely, 2^{15955002179961} is an apocalyptic number.

It is an amenable number.

15955002179961 is a deficient number, since it is larger than the sum of its proper divisors (6954925860423).

15955002179961 is a wasteful number, since it uses less digits than its factorization.

15955002179961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237880.

The product of its (nonzero) digits is 7654500, while the sum is 60.

The spelling of 15955002179961 in words is "fifteen trillion, nine hundred fifty-five billion, two million, one hundred seventy-nine thousand, nine hundred sixty-one".