72290856897 has 24 divisors (see below), whose sum is σ = 119376241920. Its totient is φ = 41295576960.

The previous prime is 72290856889. The next prime is 72290856907. The reversal of 72290856897 is 79865809227.

It is not a de Polignac number, because 72290856897 - 2³ = 72290856889 is a prime.

It is a super-3 number, since 3×72290856897³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (72290856887) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8872 + ... + 380342.

It is an arithmetic number, because the mean of its divisors is an integer number (4974010080).

Almost surely, 2^72290856897 is an apocalyptic number.

It is an amenable number.

72290856897 is a deficient number, since it is larger than the sum of its proper divisors (47085385023).

72290856897 is a wasteful number, since it uses less digits than its factorization.

72290856897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374573 (or 374570 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 72290856897 in words is "seventy-two billion, two hundred ninety million, eight hundred fifty-six thousand, eight hundred ninety-seven".