402043695791 has 4 divisors (see below), whose sum is σ = 402045079584. Its totient is φ = 402042312000.

The previous prime is 402043695769. The next prime is 402043695797. The reversal of 402043695791 is 197596340204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402043695791 is a prime.

It is a super-2 number, since 2×402043695791² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402043695797) 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, 69410 + ... + 899391.

It is an arithmetic number, because the mean of its divisors is an integer number (100511269896).

Almost surely, 2^402043695791 is an apocalyptic number.

402043695791 is a deficient number, since it is larger than the sum of its proper divisors (1383793).

402043695791 is an equidigital number, since it uses as much as digits as its factorization.

402043695791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383792.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 402043695791 in words is "four hundred two billion, forty-three million, six hundred ninety-five thousand, seven hundred ninety-one".