72114409531 has 2 divisors, whose sum is σ = 72114409532. Its totient is φ = 72114409530.

The previous prime is 72114409529. The next prime is 72114409603. The reversal of 72114409531 is 13590441127.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72114409531 - 2¹ = 72114409529 is a prime.

It is a super-2 number, since 2×72114409531² (a number of 23 digits) contains 22 as substring.

Together with 72114409529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (72114409501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36057204765 + 36057204766.

It is an arithmetic number, because the mean of its divisors is an integer number (36057204766).

Almost surely, 2^72114409531 is an apocalyptic number.

72114409531 is a deficient number, since it is larger than the sum of its proper divisors (1).

72114409531 is an equidigital number, since it uses as much as digits as its factorization.

72114409531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The spelling of 72114409531 in words is "seventy-two billion, one hundred fourteen million, four hundred nine thousand, five hundred thirty-one".