155329452891 has 6 divisors (see below), whose sum is σ = 224364765300. Its totient is φ = 103552968588.

The previous prime is 155329452763. The next prime is 155329452911. The reversal of 155329452891 is 198254923551.

155329452891 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 29 + 4 + 528 + 91 = 666.

It is not a de Polignac number, because 155329452891 - 2⁷ = 155329452763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155329452991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8629414041 + ... + 8629414058.

It is an arithmetic number, because the mean of its divisors is an integer number (37394127550).

Almost surely, 2^155329452891 is an apocalyptic number.

155329452891 is a deficient number, since it is larger than the sum of its proper divisors (69035312409).

155329452891 is a wasteful number, since it uses less digits than its factorization.

155329452891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17258828105 (or 17258828102 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The spelling of 155329452891 in words is "one hundred fifty-five billion, three hundred twenty-nine million, four hundred fifty-two thousand, eight hundred ninety-one".