72899464387 has 2 divisors, whose sum is σ = 72899464388. Its totient is φ = 72899464386.

The previous prime is 72899464343. The next prime is 72899464399. The reversal of 72899464387 is 78346499827.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72899464387 is a prime.

It is a super-2 number, since 2×72899464387² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72899464087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36449732193 + 36449732194.

It is an arithmetic number, because the mean of its divisors is an integer number (36449732194).

Almost surely, 2^72899464387 is an apocalyptic number.

72899464387 is a deficient number, since it is larger than the sum of its proper divisors (1).

72899464387 is an equidigital number, since it uses as much as digits as its factorization.

72899464387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 146313216, while the sum is 67.

The spelling of 72899464387 in words is "seventy-two billion, eight hundred ninety-nine million, four hundred sixty-four thousand, three hundred eighty-seven".