320626155023 has 4 divisors (see below), whose sum is σ = 321534444768. Its totient is φ = 319717865280.

The previous prime is 320626155011. The next prime is 320626155119. The reversal of 320626155023 is 320551626023.

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

It is a cyclic number.

It is not a de Polignac number, because 320626155023 - 2²⁰ = 320625106447 is a prime.

It is a super-2 number, since 2×320626155023² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320626157023) 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, 454144343 + ... + 454145048.

It is an arithmetic number, because the mean of its divisors is an integer number (80383611192).

Almost surely, 2^320626155023 is an apocalyptic number.

320626155023 is a deficient number, since it is larger than the sum of its proper divisors (908289745).

320626155023 is an equidigital number, since it uses as much as digits as its factorization.

320626155023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908289744.

The product of its (nonzero) digits is 64800, while the sum is 35.

The spelling of 320626155023 in words is "three hundred twenty billion, six hundred twenty-six million, one hundred fifty-five thousand, twenty-three".