23869420393897 has 32 divisors (see below), whose sum is σ = 26364706363296. Its totient is φ = 21469632153600.

The previous prime is 23869420393883. The next prime is 23869420393901. The reversal of 23869420393897 is 79839302496832.

It can be written as a sum of positive squares in 16 ways, for example, as 9906762545001 + 13962657848896 = 3147501^2 + 3736664^2 .

It is a cyclic number.

It is not a de Polignac number, because 23869420393897 - 2²³ = 23869412005289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23869420393817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2223922743 + ... + 2223933475.

It is an arithmetic number, because the mean of its divisors is an integer number (823897073853).

Almost surely, 2^{23869420393897} is an apocalyptic number.

It is an amenable number.

23869420393897 is a deficient number, since it is larger than the sum of its proper divisors (2495285969399).

23869420393897 is a wasteful number, since it uses less digits than its factorization.

23869420393897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15501.

The product of its (nonzero) digits is 846526464, while the sum is 73.

The spelling of 23869420393897 in words is "twenty-three trillion, eight hundred sixty-nine billion, four hundred twenty million, three hundred ninety-three thousand, eight hundred ninety-seven".