814040785907 has 4 divisors (see below), whose sum is σ = 814042883976. Its totient is φ = 814038687840.

The previous prime is 814040785897. The next prime is 814040785949. The reversal of 814040785907 is 709587040418.

It is a happy number.

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 814040785907 - 2¹² = 814040781811 is a prime.

It is a super-2 number, since 2×814040785907² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814040781907) 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, 278273 + ... + 1305954.

It is an arithmetic number, because the mean of its divisors is an integer number (203510720994).

Almost surely, 2^814040785907 is an apocalyptic number.

814040785907 is a deficient number, since it is larger than the sum of its proper divisors (2098069).

814040785907 is a wasteful number, since it uses less digits than its factorization.

814040785907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098068.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 814040785907 in words is "eight hundred fourteen billion, forty million, seven hundred eighty-five thousand, nine hundred seven".