155234291994 has 32 divisors (see below), whose sum is σ = 346053349440. Its totient is φ = 51581525616.

The previous prime is 155234291969. The next prime is 155234292001. The reversal of 155234291994 is 499192432551.

155234291994 is a `hidden beast` number, since 1 + 5 + 5 + 23 + 429 + 199 + 4 = 666.

155234291994 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 155234291994.

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, 4517124 + ... + 4551359.

It is an arithmetic number, because the mean of its divisors is an integer number (10814167170).

Almost surely, 2^155234291994 is an apocalyptic number.

155234291994 is an abundant number, since it is smaller than the sum of its proper divisors (190819057446).

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

155234291994 is a wasteful number, since it uses less digits than its factorization.

155234291994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9068811 (or 9068805 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The spelling of 155234291994 in words is "one hundred fifty-five billion, two hundred thirty-four million, two hundred ninety-one thousand, nine hundred ninety-four".