72007149747497 has 2 divisors, whose sum is σ = 72007149747498. Its totient is φ = 72007149747496.

The previous prime is 72007149747451. The next prime is 72007149747551. The reversal of 72007149747497 is 79474794170027.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70345979337001 + 1661170410496 = 8387251^2 + 1288864^2 .

It is a cyclic number.

It is not a de Polignac number, because 72007149747497 - 2¹⁴ = 72007149731113 is a prime.

It is a super-2 number, since 2×72007149747497² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72007149747437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36003574873748 + 36003574873749.

It is an arithmetic number, because the mean of its divisors is an integer number (36003574873749).

Almost surely, 2^{72007149747497} is an apocalyptic number.

It is an amenable number.

72007149747497 is a deficient number, since it is larger than the sum of its proper divisors (1).

72007149747497 is an equidigital number, since it uses as much as digits as its factorization.

72007149747497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174254976, while the sum is 68.

The spelling of 72007149747497 in words is "seventy-two trillion, seven billion, one hundred forty-nine million, seven hundred forty-seven thousand, four hundred ninety-seven".