13780365833 has 8 divisors (see below), whose sum is σ = 14904089928. Its totient is φ = 12665741184.

The previous prime is 13780365829. The next prime is 13780365839. The reversal of 13780365833 is 33856308731.

It can be written as a sum of positive squares in 4 ways, for example, as 150503824 + 13629862009 = 12268^2 + 116747^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13780365833 - 2² = 13780365829 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13780365839) 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, 2271710 + ... + 2277767.

It is an arithmetic number, because the mean of its divisors is an integer number (1863011241).

Almost surely, 2^13780365833 is an apocalyptic number.

13780365833 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13780365833 is a deficient number, since it is larger than the sum of its proper divisors (1123724095).

13780365833 is a wasteful number, since it uses less digits than its factorization.

13780365833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4549723.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 13780365833 in words is "thirteen billion, seven hundred eighty million, three hundred sixty-five thousand, eight hundred thirty-three".