252077191643 has 2 divisors, whose sum is σ = 252077191644. Its totient is φ = 252077191642.

The previous prime is 252077191603. The next prime is 252077191661. The reversal of 252077191643 is 346191770252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252077191643 is a prime.

It is not a weakly prime, because it can be changed into another prime (252077191603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126038595821 + 126038595822.

It is an arithmetic number, because the mean of its divisors is an integer number (126038595822).

Almost surely, 2^252077191643 is an apocalyptic number.

252077191643 is a deficient number, since it is larger than the sum of its proper divisors (1).

252077191643 is an equidigital number, since it uses as much as digits as its factorization.

252077191643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 252077191643 in words is "two hundred fifty-two billion, seventy-seven million, one hundred ninety-one thousand, six hundred forty-three".