1523897316433 has 4 divisors (see below), whose sum is σ = 1533246379888. Its totient is φ = 1514548252980.

The previous prime is 1523897316407. The next prime is 1523897316437. The reversal of 1523897316433 is 3346137983251.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 1523897316433 - 2²¹ = 1523895219281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1523897316437) 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, 4674531483 + ... + 4674531808.

It is an arithmetic number, because the mean of its divisors is an integer number (383311594972).

Almost surely, 2^{1523897316433} is an apocalyptic number.

It is an amenable number.

1523897316433 is a deficient number, since it is larger than the sum of its proper divisors (9349063455).

1523897316433 is an equidigital number, since it uses as much as digits as its factorization.

1523897316433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349063454.

The product of its digits is 9797760, while the sum is 55.

The spelling of 1523897316433 in words is "one trillion, five hundred twenty-three billion, eight hundred ninety-seven million, three hundred sixteen thousand, four hundred thirty-three".