155516261156287 has 2 divisors, whose sum is σ = 155516261156288. Its totient is φ = 155516261156286.

The previous prime is 155516261156257. The next prime is 155516261156353. The reversal of 155516261156287 is 782651162615551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155516261156287 - 2³⁵ = 155481901417919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155516261156257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77758130578143 + 77758130578144.

It is an arithmetic number, because the mean of its divisors is an integer number (77758130578144).

Almost surely, 2^{155516261156287} is an apocalyptic number.

155516261156287 is a deficient number, since it is larger than the sum of its proper divisors (1).

155516261156287 is an equidigital number, since it uses as much as digits as its factorization.

155516261156287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240000, while the sum is 61.

The spelling of 155516261156287 in words is "one hundred fifty-five trillion, five hundred sixteen billion, two hundred sixty-one million, one hundred fifty-six thousand, two hundred eighty-seven".