13779052981 has 8 divisors (see below), whose sum is σ = 13821020928. Its totient is φ = 13737150000.

The previous prime is 13779052919. The next prime is 13779052997. The reversal of 13779052981 is 18925097731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 5-Lehmer number, since φ(13779052981) divides (13779052981-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 13779052981 - 2⁷ = 13779052853 is a prime.

It is a super-2 number, since 2×13779052981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13779058981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426756 + ... + 457906.

It is an arithmetic number, because the mean of its divisors is an integer number (1727627616).

Almost surely, 2^13779052981 is an apocalyptic number.

13779052981 is the 62745-th centered heptagonal number.

It is an amenable number.

13779052981 is a deficient number, since it is larger than the sum of its proper divisors (41967947).

13779052981 is an equidigital number, since it uses as much as digits as its factorization.

13779052981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32483.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 13779052981 in words is "thirteen billion, seven hundred seventy-nine million, fifty-two thousand, nine hundred eighty-one".