155213364643 has 4 divisors (see below), whose sum is σ = 155217990960. Its totient is φ = 155208738328.

The previous prime is 155213364557. The next prime is 155213364671. The reversal of 155213364643 is 346463312551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346463312551 = 51413 ⋅6738827.

It is a cyclic number.

It is not a de Polignac number, because 155213364643 - 2²⁵ = 155179810211 is a prime.

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 155213364643.

It is not an unprimeable number, because it can be changed into a prime (155213334643) 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, 2262463 + ... + 2330056.

It is an arithmetic number, because the mean of its divisors is an integer number (38804497740).

Almost surely, 2^155213364643 is an apocalyptic number.

155213364643 is a deficient number, since it is larger than the sum of its proper divisors (4626317).

155213364643 is an equidigital number, since it uses as much as digits as its factorization.

155213364643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626316.

The product of its digits is 777600, while the sum is 43.

The spelling of 155213364643 in words is "one hundred fifty-five billion, two hundred thirteen million, three hundred sixty-four thousand, six hundred forty-three".