155847894090 has 128 divisors (see below), whose sum is σ = 437641408512. Its totient is φ = 34775516160.

The previous prime is 155847893983. The next prime is 155847894101. The reversal of 155847894090 is 90498748551.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24043650 + ... + 24050130.

It is an arithmetic number, because the mean of its divisors is an integer number (3419073504).

Almost surely, 2^155847894090 is an apocalyptic number.

155847894090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155847894090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218820704256).

155847894090 is an abundant number, since it is smaller than the sum of its proper divisors (281793514422).

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

155847894090 is a wasteful number, since it uses less digits than its factorization.

155847894090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9204.

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 155847894090 in words is "one hundred fifty-five billion, eight hundred forty-seven million, eight hundred ninety-four thousand, ninety".