72342455551631 has 2 divisors, whose sum is σ = 72342455551632. Its totient is φ = 72342455551630.

The previous prime is 72342455551627. The next prime is 72342455551753. The reversal of 72342455551631 is 13615555424327.

It is a weak prime.

It is an emirp because it is prime and its reverse (13615555424327) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72342455551631 - 2² = 72342455551627 is a prime.

It is a super-2 number, since 2×72342455551631² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72342455551601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36171227775815 + 36171227775816.

It is an arithmetic number, because the mean of its divisors is an integer number (36171227775816).

Almost surely, 2^{72342455551631} is an apocalyptic number.

72342455551631 is a deficient number, since it is larger than the sum of its proper divisors (1).

72342455551631 is an equidigital number, since it uses as much as digits as its factorization.

72342455551631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120000, while the sum is 53.

The spelling of 72342455551631 in words is "seventy-two trillion, three hundred forty-two billion, four hundred fifty-five million, five hundred fifty-one thousand, six hundred thirty-one".