23434655020421 has 12 divisors (see below), whose sum is σ = 23924645581932. Its totient is φ = 22954288816704.

The previous prime is 23434655020393. The next prime is 23434655020471. The reversal of 23434655020421 is 12402055643432.

It can be written as a sum of positive squares in 2 ways, for example, as 10712692650625 + 12721962369796 = 3273025^2 + 3566786^2 .

It is not a de Polignac number, because 23434655020421 - 2²² = 23434650826117 is a prime.

It is a super-2 number, since 2×23434655020421² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23434655020471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11187680 + ... + 13116153.

It is an arithmetic number, because the mean of its divisors is an integer number (1993720465161).

Almost surely, 2^{23434655020421} is an apocalyptic number.

It is an amenable number.

23434655020421 is a deficient number, since it is larger than the sum of its proper divisors (489990561511).

23434655020421 is an equidigital number, since it uses as much as digits as its factorization.

23434655020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24304228 (or 24304169 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

The spelling of 23434655020421 in words is "twenty-three trillion, four hundred thirty-four billion, six hundred fifty-five million, twenty thousand, four hundred twenty-one".