813241951705 has 16 divisors (see below), whose sum is σ = 1034086383360. Its totient is φ = 611854772992.

The previous prime is 813241951619. The next prime is 813241951741. The reversal of 813241951705 is 507159142318.

It is a cyclic number.

It is not a de Polignac number, because 813241951705 - 2²³ = 813233563097 is a prime.

It is a super-2 number, since 2×813241951705² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3549025 + ... + 3771214.

It is an arithmetic number, because the mean of its divisors is an integer number (64630398960).

Almost surely, 2^813241951705 is an apocalyptic number.

813241951705 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

813241951705 is a deficient number, since it is larger than the sum of its proper divisors (220844431655).

813241951705 is a wasteful number, since it uses less digits than its factorization.

813241951705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7321568.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 813241951705 in words is "eight hundred thirteen billion, two hundred forty-one million, nine hundred fifty-one thousand, seven hundred five".