161237954959 has 2 divisors, whose sum is σ = 161237954960. Its totient is φ = 161237954958.

The previous prime is 161237954921. The next prime is 161237954963. The reversal of 161237954959 is 959459732161.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161237954959 - 2¹³ = 161237946767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161237954897 and 161237954906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161237934959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80618977479 + 80618977480.

It is an arithmetic number, because the mean of its divisors is an integer number (80618977480).

Almost surely, 2^161237954959 is an apocalyptic number.

161237954959 is a deficient number, since it is larger than the sum of its proper divisors (1).

161237954959 is an equidigital number, since it uses as much as digits as its factorization.

161237954959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18370800, while the sum is 61.

The spelling of 161237954959 in words is "one hundred sixty-one billion, two hundred thirty-seven million, nine hundred fifty-four thousand, nine hundred fifty-nine".