326820072863 has 4 divisors (see below), whose sum is σ = 327099168888. Its totient is φ = 326540976840.

The previous prime is 326820072853. The next prime is 326820072961. The reversal of 326820072863 is 368270028623.

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 326820072863 - 2¹⁰ = 326820071839 is a prime.

It is a super-2 number, since 2×326820072863² (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 (326820072823) 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, 139546256 + ... + 139548597.

It is an arithmetic number, because the mean of its divisors is an integer number (81774792222).

Almost surely, 2^326820072863 is an apocalyptic number.

326820072863 is a deficient number, since it is larger than the sum of its proper divisors (279096025).

326820072863 is a wasteful number, since it uses less digits than its factorization.

326820072863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279096024.

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 326820072863 in words is "three hundred twenty-six billion, eight hundred twenty million, seventy-two thousand, eight hundred sixty-three".