15847356680 has 16 divisors (see below), whose sum is σ = 35656552620. Its totient is φ = 6338942656.

The previous prime is 15847356671. The next prime is 15847356683. The reversal of 15847356680 is 8665374851.

It can be written as a sum of positive squares in 2 ways, for example, as 14686046596 + 1161310084 = 121186^2 + 34078^2 .

It is a super-2 number, since 2×15847356680² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15847356683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198091919 + ... + 198091998.

Almost surely, 2^15847356680 is an apocalyptic number.

15847356680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15847356680 is an abundant number, since it is smaller than the sum of its proper divisors (19809195940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15847356680 is a wasteful number, since it uses less digits than its factorization.

15847356680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396183928 (or 396183924 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 53.

The spelling of 15847356680 in words is "fifteen billion, eight hundred forty-seven million, three hundred fifty-six thousand, six hundred eighty".