23511840421 has 8 divisors (see below), whose sum is σ = 23633273664. Its totient is φ = 23390628000.

The previous prime is 23511840419. The next prime is 23511840433. The reversal of 23511840421 is 12404811532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23511840421 - 2¹ = 23511840419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23511840221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160456 + ... + 269758.

It is an arithmetic number, because the mean of its divisors is an integer number (2954159208).

Almost surely, 2^23511840421 is an apocalyptic number.

It is an amenable number.

23511840421 is a deficient number, since it is larger than the sum of its proper divisors (121433243).

23511840421 is a wasteful number, since it uses less digits than its factorization.

23511840421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110411.

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 23511840421 in words is "twenty-three billion, five hundred eleven million, eight hundred forty thousand, four hundred twenty-one".