785401623863 has 4 divisors (see below), whose sum is σ = 787097956128. Its totient is φ = 783705291600.

The previous prime is 785401623827. The next prime is 785401623901. The reversal of 785401623863 is 368326104587.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368326104587 = 7 ⋅52618014941.

It is a cyclic number.

It is not a de Polignac number, because 785401623863 - 2⁸ = 785401623607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785401620863) 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, 848165438 + ... + 848166363.

It is an arithmetic number, because the mean of its divisors is an integer number (196774489032).

Almost surely, 2^785401623863 is an apocalyptic number.

785401623863 is a deficient number, since it is larger than the sum of its proper divisors (1696332265).

785401623863 is a wasteful number, since it uses less digits than its factorization.

785401623863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696332264.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 785401623863 in words is "seven hundred eighty-five billion, four hundred one million, six hundred twenty-three thousand, eight hundred sixty-three".