72530871407 has 2 divisors, whose sum is σ = 72530871408. Its totient is φ = 72530871406.

The previous prime is 72530871397. The next prime is 72530871409. The reversal of 72530871407 is 70417803527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72530871407 - 2¹⁶ = 72530805871 is a prime.

Together with 72530871409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72530871409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36265435703 + 36265435704.

It is an arithmetic number, because the mean of its divisors is an integer number (36265435704).

Almost surely, 2^72530871407 is an apocalyptic number.

72530871407 is a deficient number, since it is larger than the sum of its proper divisors (1).

72530871407 is an equidigital number, since it uses as much as digits as its factorization.

72530871407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 72530871407 in words is "seventy-two billion, five hundred thirty million, eight hundred seventy-one thousand, four hundred seven".