72989259869 has 2 divisors, whose sum is σ = 72989259870. Its totient is φ = 72989259868.

The previous prime is 72989259793. The next prime is 72989259877. The reversal of 72989259869 is 96895298927.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65943672025 + 7045587844 = 256795^2 + 83938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72989259869 is a prime.

It is a super-2 number, since 2×72989259869² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 72989259796 and 72989259805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72989259769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36494629934 + 36494629935.

It is an arithmetic number, because the mean of its divisors is an integer number (36494629935).

Almost surely, 2^72989259869 is an apocalyptic number.

It is an amenable number.

72989259869 is a deficient number, since it is larger than the sum of its proper divisors (1).

72989259869 is an equidigital number, since it uses as much as digits as its factorization.

72989259869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 74.

The spelling of 72989259869 in words is "seventy-two billion, nine hundred eighty-nine million, two hundred fifty-nine thousand, eight hundred sixty-nine".