811810358140 has 24 divisors (see below), whose sum is σ = 1705632233760. Its totient is φ = 324565956288.

The previous prime is 811810358137. The next prime is 811810358153. The reversal of 811810358140 is 41853018118.

811810358140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 811810358093 and 811810358102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9844600 + ... + 9926719.

It is an arithmetic number, because the mean of its divisors is an integer number (71068009740).

Almost surely, 2^811810358140 is an apocalyptic number.

It is an amenable number.

811810358140 is an abundant number, since it is smaller than the sum of its proper divisors (893821875620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

811810358140 is a wasteful number, since it uses less digits than its factorization.

811810358140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19773381 (or 19773379 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 40.

The spelling of 811810358140 in words is "eight hundred eleven billion, eight hundred ten million, three hundred fifty-eight thousand, one hundred forty".