72137312047 has 2 divisors, whose sum is σ = 72137312048. Its totient is φ = 72137312046.

The previous prime is 72137312041. The next prime is 72137312057. The reversal of 72137312047 is 74021373127.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72137312047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72137311997 and 72137312015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72137312041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36068656023 + 36068656024.

It is an arithmetic number, because the mean of its divisors is an integer number (36068656024).

Almost surely, 2^72137312047 is an apocalyptic number.

72137312047 is a deficient number, since it is larger than the sum of its proper divisors (1).

72137312047 is an equidigital number, since it uses as much as digits as its factorization.

72137312047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 37.

The spelling of 72137312047 in words is "seventy-two billion, one hundred thirty-seven million, three hundred twelve thousand, forty-seven".