21924230078156 has 24 divisors (see below), whose sum is σ = 43876877909760. Its totient is φ = 9390009086352.

The previous prime is 21924230078131. The next prime is 21924230078249. The reversal of 21924230078156 is 65187003242912.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253685966 + ... + 253772373.

It is an arithmetic number, because the mean of its divisors is an integer number (1828203246240).

It is a 1-persistent number, because it is pandigital, but 2⋅21924230078156 = 43848460156312 is not.

Almost surely, 2^{21924230078156} is an apocalyptic number.

It is an amenable number.

21924230078156 is an abundant number, since it is smaller than the sum of its proper divisors (21952647831604).

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

21924230078156 is a wasteful number, since it uses less digits than its factorization.

21924230078156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507459893 (or 507459891 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 21924230078156 in words is "twenty-one trillion, nine hundred twenty-four billion, two hundred thirty million, seventy-eight thousand, one hundred fifty-six".