75421400823 has 6 divisors (see below), whose sum is σ = 108942023424. Its totient is φ = 50280933876.

The previous prime is 75421400773. The next prime is 75421400837. The reversal of 75421400823 is 32800412457.

It is a happy number.

It is not a de Polignac number, because 75421400823 - 2⁶ = 75421400759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75421400893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4190077815 + ... + 4190077832.

It is an arithmetic number, because the mean of its divisors is an integer number (18157003904).

Almost surely, 2^75421400823 is an apocalyptic number.

75421400823 is a deficient number, since it is larger than the sum of its proper divisors (33520622601).

75421400823 is a wasteful number, since it uses less digits than its factorization.

75421400823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8380155653 (or 8380155650 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The spelling of 75421400823 in words is "seventy-five billion, four hundred twenty-one million, four hundred thousand, eight hundred twenty-three".