229792638520 has 32 divisors (see below), whose sum is σ = 519093353520. Its totient is φ = 91550848000.

The previous prime is 229792638511. The next prime is 229792638547. The reversal of 229792638520 is 25836297922.

It is a congruent number.

It is an unprimeable number.

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, 11433817 + ... + 11453896.

Almost surely, 2^229792638520 is an apocalyptic number.

229792638520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

229792638520 is an abundant number, since it is smaller than the sum of its proper divisors (289300715000).

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

229792638520 is a wasteful number, since it uses less digits than its factorization.

229792638520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22887975 (or 22887971 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 229792638520 in words is "two hundred twenty-nine billion, seven hundred ninety-two million, six hundred thirty-eight thousand, five hundred twenty".