21423546234060 has 48 divisors (see below), whose sum is σ = 59986150828800. Its totient is φ = 5712924579264.

The previous prime is 21423546234053. The next prime is 21423546234067. The reversal of 21423546234060 is 6043264532412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21423546234053) and next prime (21423546234067).

It is not an unprimeable number, because it can be changed into a prime (21423546234067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22410951 + ... + 23347329.

It is an arithmetic number, because the mean of its divisors is an integer number (1249711475600).

Almost surely, 2^{21423546234060} is an apocalyptic number.

21423546234060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21423546234060 is an abundant number, since it is smaller than the sum of its proper divisors (38562604594740).

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

21423546234060 is a wasteful number, since it uses less digits than its factorization.

21423546234060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317710 (or 1317708 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

The spelling of 21423546234060 in words is "twenty-one trillion, four hundred twenty-three billion, five hundred forty-six million, two hundred thirty-four thousand, sixty".