155544315433 has 4 divisors (see below), whose sum is σ = 167509262788. Its totient is φ = 143579368080.

The previous prime is 155544315419. The next prime is 155544315517. The reversal of 155544315433 is 334513445551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14805292329 + 140739023104 = 121677^2 + 375152^2 .

It is a cyclic number.

It is not a de Polignac number, because 155544315433 - 2⁹ = 155544314921 is a prime.

It is a super-3 number, since 3×155544315433³ (a number of 35 digits) contains 333 as substring.

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 155544315433.

It is not an unprimeable number, because it can be changed into a prime (155544310433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5982473658 + ... + 5982473683.

It is an arithmetic number, because the mean of its divisors is an integer number (41877315697).

Almost surely, 2^155544315433 is an apocalyptic number.

155544315433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

155544315433 is a deficient number, since it is larger than the sum of its proper divisors (11964947355).

155544315433 is a wasteful number, since it uses less digits than its factorization.

155544315433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11964947354.

The product of its digits is 1080000, while the sum is 43.

The spelling of 155544315433 in words is "one hundred fifty-five billion, five hundred forty-four million, three hundred fifteen thousand, four hundred thirty-three".