155271362689 has 4 divisors (see below), whose sum is σ = 158882324656. Its totient is φ = 151660400724.

The previous prime is 155271362669. The next prime is 155271362711. The reversal of 155271362689 is 986263172551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 986263172551 = 19 ⋅51908588029.

It is a cyclic number.

It is not a de Polignac number, because 155271362689 - 2³⁵ = 120911624321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155271362629) 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, 1805480919 + ... + 1805481004.

It is an arithmetic number, because the mean of its divisors is an integer number (39720581164).

Almost surely, 2^155271362689 is an apocalyptic number.

It is an amenable number.

155271362689 is a deficient number, since it is larger than the sum of its proper divisors (3610961967).

155271362689 is an equidigital number, since it uses as much as digits as its factorization.

155271362689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610961966.

The product of its digits is 5443200, while the sum is 55.

The spelling of 155271362689 in words is "one hundred fifty-five billion, two hundred seventy-one million, three hundred sixty-two thousand, six hundred eighty-nine".