785745075421 has 8 divisors (see below), whose sum is σ = 791615208384. Its totient is φ = 779883712800.

The previous prime is 785745075419. The next prime is 785745075439. The reversal of 785745075421 is 124570547587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 785745075421 - 2¹ = 785745075419 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 (785745075481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012680 + ... + 2371153.

It is an arithmetic number, because the mean of its divisors is an integer number (98951901048).

Almost surely, 2^785745075421 is an apocalyptic number.

It is an amenable number.

785745075421 is a deficient number, since it is larger than the sum of its proper divisors (5870132963).

785745075421 is a wasteful number, since it uses less digits than its factorization.

785745075421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385171.

The product of its (nonzero) digits is 10976000, while the sum is 55.

The spelling of 785745075421 in words is "seven hundred eighty-five billion, seven hundred forty-five million, seventy-five thousand, four hundred twenty-one".