13453720775 has 72 divisors (see below), whose sum is σ = 19109214432. Its totient is φ = 9380448000.

The previous prime is 13453720759. The next prime is 13453720789. The reversal of 13453720775 is 57702735431.

It is a happy number.

It is not a de Polignac number, because 13453720775 - 2⁴ = 13453720759 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7945829 + ... + 7947521.

It is an arithmetic number, because the mean of its divisors is an integer number (265405756).

Almost surely, 2^13453720775 is an apocalyptic number.

13453720775 is a deficient number, since it is larger than the sum of its proper divisors (5655493657).

13453720775 is a wasteful number, since it uses less digits than its factorization.

13453720775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833 (or 1817 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 44.

The spelling of 13453720775 in words is "thirteen billion, four hundred fifty-three million, seven hundred twenty thousand, seven hundred seventy-five".