23401216510464 has 160 divisors (see below), whose sum is σ = 68775376469184. Its totient is φ = 7024755179520.

The previous prime is 23401216510429. The next prime is 23401216510487. The reversal of 23401216510464 is 46401561210432.

It is a super-2 number, since 2×23401216510464² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13473214 + ... + 15110589.

Almost surely, 2^{23401216510464} is an apocalyptic number.

23401216510464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

23401216510464 is an abundant number, since it is smaller than the sum of its proper divisors (45374159958720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23401216510464 is a wasteful number, since it uses less digits than its factorization.

23401216510464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28583878 (or 28583862 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 23401216510464 its reverse (46401561210432), we get a palindrome (69802777720896).

The spelling of 23401216510464 in words is "twenty-three trillion, four hundred one billion, two hundred sixteen million, five hundred ten thousand, four hundred sixty-four".