155847894101 has 2 divisors, whose sum is σ = 155847894102. Its totient is φ = 155847894100.

The previous prime is 155847893983. The next prime is 155847894119. The reversal of 155847894101 is 101498748551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154964259025 + 883635076 = 393655^2 + 29726^2 .

It is a cyclic number.

It is not a de Polignac number, because 155847894101 - 2²² = 155843699797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155847894161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77923947050 + 77923947051.

It is an arithmetic number, because the mean of its divisors is an integer number (77923947051).

Almost surely, 2^155847894101 is an apocalyptic number.

It is an amenable number.

155847894101 is a deficient number, since it is larger than the sum of its proper divisors (1).

155847894101 is an equidigital number, since it uses as much as digits as its factorization.

155847894101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 53.

The spelling of 155847894101 in words is "one hundred fifty-five billion, eight hundred forty-seven million, eight hundred ninety-four thousand, one hundred one".