155142241551 has 48 divisors (see below), whose sum is σ = 250518707712. Its totient is φ = 91699497600.

The previous prime is 155142241549. The next prime is 155142241567.

155142241551 is a `hidden beast` number, since 1 + 55 + 14 + 2 + 2 + 41 + 551 = 666.

155142241551 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 155142241551 - 2¹ = 155142241549 is a prime.

It is a super-2 number, since 2×155142241551² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155142241511) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15918586 + ... + 15928328.

It is an arithmetic number, because the mean of its divisors is an integer number (5219139744).

Almost surely, 2^155142241551 is an apocalyptic number.

155142241551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155142241551 is a deficient number, since it is larger than the sum of its proper divisors (95376466161).

155142241551 is a wasteful number, since it uses less digits than its factorization.

155142241551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13724 (or 13721 counting only the distinct ones).

The product of its digits is 40000, while the sum is 36.

It can be divided in two parts, 155142 and 241551, that added together give a palindrome (396693).

The spelling of 155142241551 in words is "one hundred fifty-five billion, one hundred forty-two million, two hundred forty-one thousand, five hundred fifty-one".