13977864280 has 64 divisors (see below), whose sum is σ = 33020460000. Its totient is φ = 5317745664.

The previous prime is 13977864259. The next prime is 13977864301. The reversal of 13977864280 is 8246877931.

It is an interprime number because it is at equal distance from previous prime (13977864259) and next prime (13977864301).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12205 + ... + 167644.

Almost surely, 2^13977864280 is an apocalyptic number.

13977864280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13977864280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16510230000).

13977864280 is an abundant number, since it is smaller than the sum of its proper divisors (19042595720).

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

13977864280 is a wasteful number, since it uses less digits than its factorization.

13977864280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179956 (or 179952 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 13977864280 in words is "thirteen billion, nine hundred seventy-seven million, eight hundred sixty-four thousand, two hundred eighty".