813711706645 has 32 divisors (see below), whose sum is σ = 1004891650560. Its totient is φ = 632228298240.

The previous prime is 813711706607. The next prime is 813711706667. The reversal of 813711706645 is 546607117318.

It is not a de Polignac number, because 813711706645 - 2⁹ = 813711706133 is a prime.

It is a super-2 number, since 2×813711706645² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86002215 + ... + 86011675.

It is an arithmetic number, because the mean of its divisors is an integer number (31402864080).

Almost surely, 2^813711706645 is an apocalyptic number.

It is an amenable number.

813711706645 is a deficient number, since it is larger than the sum of its proper divisors (191179943915).

813711706645 is a wasteful number, since it uses less digits than its factorization.

813711706645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12285.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 813711706645 in words is "eight hundred thirteen billion, seven hundred eleven million, seven hundred six thousand, six hundred forty-five".