155670291871 has 16 divisors (see below), whose sum is σ = 163038807360. Its totient is φ = 148442999040.

The previous prime is 155670291869. The next prime is 155670291877. The reversal of 155670291871 is 178192076551.

It is a cyclic number.

It is not a de Polignac number, because 155670291871 - 2¹ = 155670291869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155670291877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1044291 + ... + 1184011.

It is an arithmetic number, because the mean of its divisors is an integer number (10189925460).

Almost surely, 2^155670291871 is an apocalyptic number.

155670291871 is a deficient number, since it is larger than the sum of its proper divisors (7368515489).

155670291871 is a wasteful number, since it uses less digits than its factorization.

155670291871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140226.

The product of its (nonzero) digits is 1058400, while the sum is 52.

The spelling of 155670291871 in words is "one hundred fifty-five billion, six hundred seventy million, two hundred ninety-one thousand, eight hundred seventy-one".