23491479380 has 24 divisors (see below), whose sum is σ = 50262903432. Its totient is φ = 9219297152.

The previous prime is 23491479379. The next prime is 23491479383. The reversal of 23491479380 is 8397419432.

It can be written as a sum of positive squares in 4 ways, for example, as 2658021136 + 20833458244 = 51556^2 + 144338^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23491479383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11079827 + ... + 11081946.

It is an arithmetic number, because the mean of its divisors is an integer number (2094287643).

Almost surely, 2^23491479380 is an apocalyptic number.

23491479380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23491479380 is an abundant number, since it is smaller than the sum of its proper divisors (26771424052).

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

23491479380 is a wasteful number, since it uses less digits than its factorization.

23491479380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22161835 (or 22161833 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 23491479380 in words is "twenty-three billion, four hundred ninety-one million, four hundred seventy-nine thousand, three hundred eighty".