155106505466020 has 12 divisors (see below), whose sum is σ = 325723661478684. Its totient is φ = 62042602186400.

The previous prime is 155106505465997. The next prime is 155106505466023. The reversal of 155106505466020 is 20664505601551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20207200638564 + 134899304827456 = 4495242^2 + 11614616^2 .

It is not an unprimeable number, because it can be changed into a prime (155106505466023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3877662636631 + ... + 3877662636670.

It is an arithmetic number, because the mean of its divisors is an integer number (27143638456557).

Almost surely, 2^{155106505466020} is an apocalyptic number.

155106505466020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155106505466020 is an abundant number, since it is smaller than the sum of its proper divisors (170617156012664).

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

155106505466020 is a wasteful number, since it uses less digits than its factorization.

155106505466020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7755325273310 (or 7755325273308 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 46.

The spelling of 155106505466020 in words is "one hundred fifty-five trillion, one hundred six billion, five hundred five million, four hundred sixty-six thousand, twenty".