23424311452521 has 32 divisors (see below), whose sum is σ = 35883836448768. Its totient is φ = 13314331733760.

The previous prime is 23424311452469. The next prime is 23424311452559. The reversal of 23424311452521 is 12525411342432.

It is not a de Polignac number, because 23424311452521 - 2⁷ = 23424311452393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23424311452521.

It is not an unprimeable number, because it can be changed into a prime (23424311452921) 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, 1686070 + ... + 7049216.

It is an arithmetic number, because the mean of its divisors is an integer number (1121369889024).

Almost surely, 2^{23424311452521} is an apocalyptic number.

23424311452521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23424311452521 is a deficient number, since it is larger than the sum of its proper divisors (12459524996247).

23424311452521 is a wasteful number, since it uses less digits than its factorization.

23424311452521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364261.

The product of its digits is 230400, while the sum is 39.

Adding to 23424311452521 its reverse (12525411342432), we get a palindrome (35949722794953).

The spelling of 23424311452521 in words is "twenty-three trillion, four hundred twenty-four billion, three hundred eleven million, four hundred fifty-two thousand, five hundred twenty-one".