72970170115331 has 2 divisors, whose sum is σ = 72970170115332. Its totient is φ = 72970170115330.

The previous prime is 72970170115327. The next prime is 72970170115373. The reversal of 72970170115331 is 13351107107927.

It is a weak prime.

It is an emirp because it is prime and its reverse (13351107107927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72970170115331 - 2² = 72970170115327 is a prime.

It is a super-2 number, since 2×72970170115331² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72970170117331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36485085057665 + 36485085057666.

It is an arithmetic number, because the mean of its divisors is an integer number (36485085057666).

Almost surely, 2^{72970170115331} is an apocalyptic number.

72970170115331 is a deficient number, since it is larger than the sum of its proper divisors (1).

72970170115331 is an equidigital number, since it uses as much as digits as its factorization.

72970170115331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 277830, while the sum is 47.

The spelling of 72970170115331 in words is "seventy-two trillion, nine hundred seventy billion, one hundred seventy million, one hundred fifteen thousand, three hundred thirty-one".