15478526668 has 18 divisors (see below), whose sum is σ = 29773778468. Its totient is φ = 7035693720.

The previous prime is 15478526663. The next prime is 15478526699. The reversal of 15478526668 is 86662587451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (15478526663) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15989730 + ... + 15990697.

Almost surely, 2^15478526668 is an apocalyptic number.

It is an amenable number.

15478526668 is a deficient number, since it is larger than the sum of its proper divisors (14295251800).

15478526668 is a wasteful number, since it uses less digits than its factorization.

15478526668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31980453 (or 31980440 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 58.

The spelling of 15478526668 in words is "fifteen billion, four hundred seventy-eight million, five hundred twenty-six thousand, six hundred sixty-eight".