155415831265 has 8 divisors (see below), whose sum is σ = 194607649728. Its totient is φ = 118926896880.

The previous prime is 155415831247. The next prime is 155415831269. The reversal of 155415831265 is 562138514551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 155415831265 - 2⁹ = 155415830753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155415831269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675720891 + ... + 675721120.

It is an arithmetic number, because the mean of its divisors is an integer number (24325956216).

Almost surely, 2^155415831265 is an apocalyptic number.

It is an amenable number.

155415831265 is a deficient number, since it is larger than the sum of its proper divisors (39191818463).

155415831265 is a wasteful number, since it uses less digits than its factorization.

155415831265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351442039.

The product of its digits is 720000, while the sum is 46.

The spelling of 155415831265 in words is "one hundred fifty-five billion, four hundred fifteen million, eight hundred thirty-one thousand, two hundred sixty-five".