155209641270 has 32 divisors (see below), whose sum is σ = 378062892288. Its totient is φ = 40771487328.

The previous prime is 155209641229. The next prime is 155209641311. The reversal of 155209641270 is 72146902551.

It is an interprime number because it is at equal distance from previous prime (155209641229) and next prime (155209641311).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38607354 + ... + 38611373.

It is an arithmetic number, because the mean of its divisors is an integer number (11814465384).

Almost surely, 2^155209641270 is an apocalyptic number.

155209641270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155209641270 is an abundant number, since it is smaller than the sum of its proper divisors (222853251018).

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

155209641270 is a wasteful number, since it uses less digits than its factorization.

155209641270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77218804.

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 155209641270 in words is "one hundred fifty-five billion, two hundred nine million, six hundred forty-one thousand, two hundred seventy".