172863711357643 has 2 divisors, whose sum is σ = 172863711357644. Its totient is φ = 172863711357642.

The previous prime is 172863711357637. The next prime is 172863711357653. The reversal of 172863711357643 is 346753117368271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172863711357643 - 2¹³ = 172863711349451 is a prime.

It is not a weakly prime, because it can be changed into another prime (172863711357653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86431855678821 + 86431855678822.

It is an arithmetic number, because the mean of its divisors is an integer number (86431855678822).

Almost surely, 2^{172863711357643} is an apocalyptic number.

172863711357643 is a deficient number, since it is larger than the sum of its proper divisors (1).

172863711357643 is an equidigital number, since it uses as much as digits as its factorization.

172863711357643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 106686720, while the sum is 64.

The spelling of 172863711357643 in words is "one hundred seventy-two trillion, eight hundred sixty-three billion, seven hundred eleven million, three hundred fifty-seven thousand, six hundred forty-three".