155755266431 has 4 divisors (see below), whose sum is σ = 155896478112. Its totient is φ = 155614054752.

The previous prime is 155755266421. The next prime is 155755266463. The reversal of 155755266431 is 134662557551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134662557551 = 19 ⋅7087503029.

It is a cyclic number.

It is not a de Polignac number, because 155755266431 - 2⁶ = 155755266367 is a prime.

It is a super-2 number, since 2×155755266431² (a number of 23 digits) contains 22 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 155755266431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155755266421) 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, 70604186 + ... + 70606391.

It is an arithmetic number, because the mean of its divisors is an integer number (38974119528).

Almost surely, 2^155755266431 is an apocalyptic number.

155755266431 is a deficient number, since it is larger than the sum of its proper divisors (141211681).

155755266431 is a wasteful number, since it uses less digits than its factorization.

155755266431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141211680.

The product of its digits is 3780000, while the sum is 50.

The spelling of 155755266431 in words is "one hundred fifty-five billion, seven hundred fifty-five million, two hundred sixty-six thousand, four hundred thirty-one".