813780753101 has 4 divisors (see below), whose sum is σ = 813844228512. Its totient is φ = 813717277692.

The previous prime is 813780753067. The next prime is 813780753119. The reversal of 813780753101 is 101357087318.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-813780753101 is a prime.

It is a super-2 number, since 2×813780753101² (a number of 25 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 (813780753131) 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, 31718471 + ... + 31744116.

It is an arithmetic number, because the mean of its divisors is an integer number (203461057128).

Almost surely, 2^813780753101 is an apocalyptic number.

It is an amenable number.

813780753101 is a deficient number, since it is larger than the sum of its proper divisors (63475411).

813780753101 is a wasteful number, since it uses less digits than its factorization.

813780753101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63475410.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 813780753101 in words is "eight hundred thirteen billion, seven hundred eighty million, seven hundred fifty-three thousand, one hundred one".