72876867841 has 2 divisors, whose sum is σ = 72876867842. Its totient is φ = 72876867840.

The previous prime is 72876867823. The next prime is 72876867851. The reversal of 72876867841 is 14876867827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72856806400 + 20061441 = 269920^2 + 4479^2 .

It is an emirp because it is prime and its reverse (14876867827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72876867841 - 2¹¹ = 72876865793 is a prime.

It is a super-2 number, since 2×72876867841² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72876867851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36438433920 + 36438433921.

It is an arithmetic number, because the mean of its divisors is an integer number (36438433921).

Almost surely, 2^72876867841 is an apocalyptic number.

It is an amenable number.

72876867841 is a deficient number, since it is larger than the sum of its proper divisors (1).

72876867841 is an equidigital number, since it uses as much as digits as its factorization.

72876867841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50577408, while the sum is 64.

The spelling of 72876867841 in words is "seventy-two billion, eight hundred seventy-six million, eight hundred sixty-seven thousand, eight hundred forty-one".