72877202813 has 2 divisors, whose sum is σ = 72877202814. Its totient is φ = 72877202812.

The previous prime is 72877202729. The next prime is 72877202833. The reversal of 72877202813 is 31820277827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37901470489 + 34975732324 = 194683^2 + 187018^2 .

It is a cyclic number.

It is not a de Polignac number, because 72877202813 - 2²⁴ = 72860425597 is a prime.

It is a super-2 number, since 2×72877202813² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72877202833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36438601406 + 36438601407.

It is an arithmetic number, because the mean of its divisors is an integer number (36438601407).

Almost surely, 2^72877202813 is an apocalyptic number.

It is an amenable number.

72877202813 is a deficient number, since it is larger than the sum of its proper divisors (1).

72877202813 is an equidigital number, since it uses as much as digits as its factorization.

72877202813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 47.

The spelling of 72877202813 in words is "seventy-two billion, eight hundred seventy-seven million, two hundred two thousand, eight hundred thirteen".