13899810952980 has 36 divisors (see below), whose sum is σ = 42162759891252. Its totient is φ = 3706616254080.

The previous prime is 13899810952967. The next prime is 13899810952991. The reversal of 13899810952980 is 8925901899831.

It is a happy number.

13899810952980 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 9 + 8 + 10 + 9 + 529 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10104655003524 + 3795155949456 = 3178782^2 + 1948116^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 13899810952899 and 13899810952908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38610585801 + ... + 38610586160.

It is an arithmetic number, because the mean of its divisors is an integer number (1171187774757).

Almost surely, 2^{13899810952980} is an apocalyptic number.

13899810952980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13899810952980 is an abundant number, since it is smaller than the sum of its proper divisors (28262948938272).

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

13899810952980 is a wasteful number, since it uses less digits than its factorization.

13899810952980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77221171976 (or 77221171971 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 72.

The spelling of 13899810952980 in words is "thirteen trillion, eight hundred ninety-nine billion, eight hundred ten million, nine hundred fifty-two thousand, nine hundred eighty".