23345400511 has 4 divisors (see below), whose sum is σ = 23665200592. Its totient is φ = 23025600432.

The previous prime is 23345400497. The next prime is 23345400523. The reversal of 23345400511 is 11500454332.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23345400511 - 2²⁵ = 23311846079 is a prime.

It is a super-2 number, since 2×23345400511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23345400511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23345400811) 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, 159899931 + ... + 159900076.

It is an arithmetic number, because the mean of its divisors is an integer number (5916300148).

Almost surely, 2^23345400511 is an apocalyptic number.

23345400511 is a deficient number, since it is larger than the sum of its proper divisors (319800081).

23345400511 is an equidigital number, since it uses as much as digits as its factorization.

23345400511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319800080.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 23345400511 its reverse (11500454332), we get a palindrome (34845854843).

The spelling of 23345400511 in words is "twenty-three billion, three hundred forty-five million, four hundred thousand, five hundred eleven".