72877202729 has 2 divisors, whose sum is σ = 72877202730. Its totient is φ = 72877202728.

The previous prime is 72877202719. The next prime is 72877202813. The reversal of 72877202729 is 92720277827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69668546704 + 3208656025 = 263948^2 + 56645^2 .

It is an emirp because it is prime and its reverse (92720277827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72877202729 - 2⁸ = 72877202473 is a prime.

It is a super-2 number, since 2×72877202729² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72877202719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36438601364 + 36438601365.

It is an arithmetic number, because the mean of its divisors is an integer number (36438601365).

Almost surely, 2^72877202729 is an apocalyptic number.

It is an amenable number.

72877202729 is a deficient number, since it is larger than the sum of its proper divisors (1).

72877202729 is an equidigital number, since it uses as much as digits as its factorization.

72877202729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2765952, while the sum is 53.

The spelling of 72877202729 in words is "seventy-two billion, eight hundred seventy-seven million, two hundred two thousand, seven hundred twenty-nine".