402826660867 has 16 divisors (see below), whose sum is σ = 406506038400. Its totient is φ = 399165854400.

The previous prime is 402826660849. The next prime is 402826660909. The reversal of 402826660867 is 768066628204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402826660867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402826666867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63145684 + ... + 63152062.

It is an arithmetic number, because the mean of its divisors is an integer number (25406627400).

Almost surely, 2^402826660867 is an apocalyptic number.

402826660867 is a deficient number, since it is larger than the sum of its proper divisors (3679377533).

402826660867 is a wasteful number, since it uses less digits than its factorization.

402826660867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7746.

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 402826660867 in words is "four hundred two billion, eight hundred twenty-six million, six hundred sixty thousand, eight hundred sixty-seven".