13142999856 has 40 divisors (see below), whose sum is σ = 38803143424. Its totient is φ = 3755142720.

The previous prime is 13142999851. The next prime is 13142999861. The reversal of 13142999856 is 65899924131.

It is an interprime number because it is at equal distance from previous prime (13142999851) and next prime (13142999861).

It is a junction number, because it is equal to n+sod(n) for n = 13142999796 and 13142999805.

It is not an unprimeable number, because it can be changed into a prime (13142999851) 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, 19557700 + ... + 19558371.

Almost surely, 2^13142999856 is an apocalyptic number.

13142999856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13142999856 is an abundant number, since it is smaller than the sum of its proper divisors (25660143568).

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

13142999856 is a wasteful number, since it uses less digits than its factorization.

13142999856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39116089 (or 39116083 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 57.

The spelling of 13142999856 in words is "thirteen billion, one hundred forty-two million, nine hundred ninety-nine thousand, eight hundred fifty-six".