18905272041432 has 64 divisors (see below), whose sum is σ = 54043841214720. Its totient is φ = 5398628473728.

The previous prime is 18905272041431. The next prime is 18905272041451. The reversal of 18905272041432 is 23414027250981.

It is a super-2 number, since 2×18905272041432² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18905272041431) 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, 29661058 + ... + 30291729.

It is an arithmetic number, because the mean of its divisors is an integer number (844435018980).

Almost surely, 2^{18905272041432} is an apocalyptic number.

18905272041432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18905272041432 is an abundant number, since it is smaller than the sum of its proper divisors (35138569173288).

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

18905272041432 is a wasteful number, since it uses less digits than its factorization.

18905272041432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59954680 (or 59954676 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 18905272041432 in words is "eighteen trillion, nine hundred five billion, two hundred seventy-two million, forty-one thousand, four hundred thirty-two".