155541145551 has 8 divisors (see below), whose sum is σ = 226241666304. Its totient is φ = 94267360920.

The previous prime is 155541145531. The next prime is 155541145597.

155541145551 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 155541145551 - 2⁵ = 155541145519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155541145531) 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, 2356683991 + ... + 2356684056.

It is an arithmetic number, because the mean of its divisors is an integer number (28280208288).

Almost surely, 2^155541145551 is an apocalyptic number.

155541145551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155541145551 is a deficient number, since it is larger than the sum of its proper divisors (70700520753).

155541145551 is a wasteful number, since it uses less digits than its factorization.

155541145551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713368061.

The product of its digits is 250000, while the sum is 42.

The spelling of 155541145551 in words is "one hundred fifty-five billion, five hundred forty-one million, one hundred forty-five thousand, five hundred fifty-one".