20423430615624 has 32 divisors (see below), whose sum is σ = 51077692602240. Its totient is φ = 6805261396800.

The previous prime is 20423430615593. The next prime is 20423430615641. The reversal of 20423430615624 is 42651603432402.

It is a happy number.

It is a super-2 number, since 2×20423430615624² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159235087 + ... + 159363294.

It is an arithmetic number, because the mean of its divisors is an integer number (1596177893820).

Almost surely, 2^{20423430615624} is an apocalyptic number.

20423430615624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20423430615624 is an abundant number, since it is smaller than the sum of its proper divisors (30654261986616).

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

20423430615624 is a wasteful number, since it uses less digits than its factorization.

20423430615624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318601061 (or 318601057 counting only the distinct ones).

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

The spelling of 20423430615624 in words is "twenty trillion, four hundred twenty-three billion, four hundred thirty million, six hundred fifteen thousand, six hundred twenty-four".