72501902269 has 2 divisors, whose sum is σ = 72501902270. Its totient is φ = 72501902268.

The previous prime is 72501902219. The next prime is 72501902273. The reversal of 72501902269 is 96220910527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42698023225 + 29803879044 = 206635^2 + 172638^2 .

It is a cyclic number.

It is not a de Polignac number, because 72501902269 - 2⁹ = 72501901757 is a prime.

It is a super-2 number, since 2×72501902269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72501902219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36250951134 + 36250951135.

It is an arithmetic number, because the mean of its divisors is an integer number (36250951135).

Almost surely, 2^72501902269 is an apocalyptic number.

It is an amenable number.

72501902269 is a deficient number, since it is larger than the sum of its proper divisors (1).

72501902269 is an equidigital number, since it uses as much as digits as its factorization.

72501902269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 72501902269 in words is "seventy-two billion, five hundred one million, nine hundred two thousand, two hundred sixty-nine".