402312129977 has 2 divisors, whose sum is σ = 402312129978. Its totient is φ = 402312129976.

The previous prime is 402312129971. The next prime is 402312130063. The reversal of 402312129977 is 779921213204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319158333481 + 83153796496 = 564941^2 + 288364^2 .

It is a cyclic number.

It is not a de Polignac number, because 402312129977 - 2¹⁸ = 402311867833 is a prime.

It is not a weakly prime, because it can be changed into another prime (402312129971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201156064988 + 201156064989.

It is an arithmetic number, because the mean of its divisors is an integer number (201156064989).

Almost surely, 2^402312129977 is an apocalyptic number.

It is an amenable number.

402312129977 is a deficient number, since it is larger than the sum of its proper divisors (1).

402312129977 is an equidigital number, since it uses as much as digits as its factorization.

402312129977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 402312129977 in words is "four hundred two billion, three hundred twelve million, one hundred twenty-nine thousand, nine hundred seventy-seven".