13780261616 has 40 divisors (see below), whose sum is σ = 29237307264. Its totient is φ = 6239917760.

The previous prime is 13780261601. The next prime is 13780261633. The reversal of 13780261616 is 61616208731.

It is a super-2 number, since 2×13780261616² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102566 + ... + 195141.

Almost surely, 2^13780261616 is an apocalyptic number.

13780261616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13780261616 is an abundant number, since it is smaller than the sum of its proper divisors (15457045648).

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

13780261616 is a wasteful number, since it uses less digits than its factorization.

13780261616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297989 (or 297983 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 13780261616 in words is "thirteen billion, seven hundred eighty million, two hundred sixty-one thousand, six hundred sixteen".