155127397566 has 16 divisors (see below), whose sum is σ = 310320403344. Its totient is φ = 51698197824.

The previous prime is 155127397559. The next prime is 155127397573. The reversal of 155127397566 is 665793721551.

It is an interprime number because it is at equal distance from previous prime (155127397559) and next prime (155127397573).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702911 + ... + 2759706.

It is an arithmetic number, because the mean of its divisors is an integer number (19395025209).

Almost surely, 2^155127397566 is an apocalyptic number.

155127397566 is an abundant number, since it is smaller than the sum of its proper divisors (155193005778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155127397566 is a wasteful number, since it uses less digits than its factorization.

155127397566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467355.

The product of its digits is 11907000, while the sum is 57.

The spelling of 155127397566 in words is "one hundred fifty-five billion, one hundred twenty-seven million, three hundred ninety-seven thousand, five hundred sixty-six".