161191276711 has 2 divisors, whose sum is σ = 161191276712. Its totient is φ = 161191276710.

The previous prime is 161191276643. The next prime is 161191276739. The reversal of 161191276711 is 117672191161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161191276711 - 2¹⁷ = 161191145639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161191270711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80595638355 + 80595638356.

It is an arithmetic number, because the mean of its divisors is an integer number (80595638356).

Almost surely, 2^161191276711 is an apocalyptic number.

161191276711 is a deficient number, since it is larger than the sum of its proper divisors (1).

161191276711 is an equidigital number, since it uses as much as digits as its factorization.

161191276711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 43.

The spelling of 161191276711 in words is "one hundred sixty-one billion, one hundred ninety-one million, two hundred seventy-six thousand, seven hundred eleven".