13572523097 has 4 divisors (see below), whose sum is σ = 15511454976. Its totient is φ = 11633591220.

The previous prime is 13572523001. The next prime is 13572523141. The reversal of 13572523097 is 79032527531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79032527531 = 137 ⋅576879763.

It is a cyclic number.

It is not a de Polignac number, because 13572523097 - 2²⁴ = 13555745881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13572523297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 969465929 + ... + 969465942.

It is an arithmetic number, because the mean of its divisors is an integer number (3877863744).

Almost surely, 2^13572523097 is an apocalyptic number.

It is an amenable number.

13572523097 is a deficient number, since it is larger than the sum of its proper divisors (1938931879).

13572523097 is an equidigital number, since it uses as much as digits as its factorization.

13572523097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938931878.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 13572523097 in words is "thirteen billion, five hundred seventy-two million, five hundred twenty-three thousand, ninety-seven".