15827954961 has 48 divisors (see below), whose sum is σ = 26456419584. Its totient is φ = 8342966016.

The previous prime is 15827954951. The next prime is 15827954963. The reversal of 15827954961 is 16945972851.

It is a happy number.

It is not a de Polignac number, because 15827954961 - 2⁹ = 15827954449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (15827954963) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4858045 + ... + 4861301.

It is an arithmetic number, because the mean of its divisors is an integer number (551175408).

Almost surely, 2^15827954961 is an apocalyptic number.

It is an amenable number.

15827954961 is a deficient number, since it is larger than the sum of its proper divisors (10628464623).

15827954961 is a wasteful number, since it uses less digits than its factorization.

15827954961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5830 (or 5823 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The spelling of 15827954961 in words is "fifteen billion, eight hundred twenty-seven million, nine hundred fifty-four thousand, nine hundred sixty-one".