155435545534551 has 32 divisors (see below), whose sum is σ = 226568666707200. Its totient is φ = 94443359788800.

The previous prime is 155435545534541. The next prime is 155435545534553.

155435545534551 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 155435545534551 - 2²⁹ = 155435008663639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155435545534553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413863225 + ... + 414238626.

It is an arithmetic number, because the mean of its divisors is an integer number (7080270834600).

Almost surely, 2^{155435545534551} is an apocalyptic number.

155435545534551 is a deficient number, since it is larger than the sum of its proper divisors (71133121172649).

155435545534551 is a wasteful number, since it uses less digits than its factorization.

155435545534551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828101999.

The product of its digits is 225000000, while the sum is 60.

The spelling of 155435545534551 in words is "one hundred fifty-five trillion, four hundred thirty-five billion, five hundred forty-five million, five hundred thirty-four thousand, five hundred fifty-one".