155163661337 has 2 divisors, whose sum is σ = 155163661338. Its totient is φ = 155163661336.

The previous prime is 155163661321. The next prime is 155163661379. The reversal of 155163661337 is 733166361551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83119196416 + 72044464921 = 288304^2 + 268411^2 .

It is a cyclic number.

It is not a de Polignac number, because 155163661337 - 2⁴ = 155163661321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155163661291 and 155163661300.

It is not a weakly prime, because it can be changed into another prime (155163661537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77581830668 + 77581830669.

It is an arithmetic number, because the mean of its divisors is an integer number (77581830669).

Almost surely, 2^155163661337 is an apocalyptic number.

It is an amenable number.

155163661337 is a deficient number, since it is larger than the sum of its proper divisors (1).

155163661337 is an equidigital number, since it uses as much as digits as its factorization.

155163661337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1020600, while the sum is 47.

The spelling of 155163661337 in words is "one hundred fifty-five billion, one hundred sixty-three million, six hundred sixty-one thousand, three hundred thirty-seven".