72289042231 has 32 divisors (see below), whose sum is σ = 85047874560. Its totient is φ = 60156746496.

The previous prime is 72289042223. The next prime is 72289042237. The reversal of 72289042231 is 13224098227.

It is a happy number.

It is not a de Polignac number, because 72289042231 - 2³ = 72289042223 is a prime.

It is a super-2 number, since 2×72289042231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72289042237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49957150 + ... + 49958596.

It is an arithmetic number, because the mean of its divisors is an integer number (2657746080).

Almost surely, 2^72289042231 is an apocalyptic number.

72289042231 is a deficient number, since it is larger than the sum of its proper divisors (12758832329).

72289042231 is a wasteful number, since it uses less digits than its factorization.

72289042231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 72289042231 in words is "seventy-two billion, two hundred eighty-nine million, forty-two thousand, two hundred thirty-one".