155233363332551 has 16 divisors (see below), whose sum is σ = 180445245242880. Its totient is φ = 130781121847200.

The previous prime is 155233363332539. The next prime is 155233363332563.

155233363332551 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (155233363332539) and next prime (155233363332563).

It is a cyclic number.

It is not a de Polignac number, because 155233363332551 - 2³⁰ = 155232289590727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155233363332551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155233363332581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27347675 + ... + 32532476.

It is an arithmetic number, because the mean of its divisors is an integer number (11277827827680).

Almost surely, 2^{155233363332551} is an apocalyptic number.

155233363332551 is a deficient number, since it is larger than the sum of its proper divisors (25211881910329).

155233363332551 is an equidigital number, since it uses as much as digits as its factorization.

155233363332551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59886494.

The product of its digits is 10935000, while the sum is 50.

The spelling of 155233363332551 in words is "one hundred fifty-five trillion, two hundred thirty-three billion, three hundred sixty-three million, three hundred thirty-two thousand, five hundred fifty-one".