102777074321 has 2 divisors, whose sum is σ = 102777074322. Its totient is φ = 102777074320.

The previous prime is 102777074311. The next prime is 102777074371. The reversal of 102777074321 is 123470777201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99754273921 + 3022800400 = 315839^2 + 54980^2 .

It is a cyclic number.

It is not a de Polignac number, because 102777074321 - 2¹⁴ = 102777057937 is a prime.

It is a super-2 number, since 2×102777074321² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (102777074311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51388537160 + 51388537161.

It is an arithmetic number, because the mean of its divisors is an integer number (51388537161).

Almost surely, 2^102777074321 is an apocalyptic number.

It is an amenable number.

102777074321 is a deficient number, since it is larger than the sum of its proper divisors (1).

102777074321 is an equidigital number, since it uses as much as digits as its factorization.

102777074321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115248, while the sum is 41.

The spelling of 102777074321 in words is "one hundred two billion, seven hundred seventy-seven million, seventy-four thousand, three hundred twenty-one".