402684460660 has 12 divisors (see below), whose sum is σ = 845637367428. Its totient is φ = 161073784256.

The previous prime is 402684460559. The next prime is 402684460663. The reversal of 402684460660 is 66064486204.

It can be written as a sum of positive squares in 2 ways, for example, as 190839669904 + 211844790756 = 436852^2 + 460266^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402684460660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402684460663) 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 3 ways as a sum of consecutive naturals, for example, 10067111497 + ... + 10067111536.

It is an arithmetic number, because the mean of its divisors is an integer number (70469780619).

Almost surely, 2^402684460660 is an apocalyptic number.

It is an amenable number.

402684460660 is an abundant number, since it is smaller than the sum of its proper divisors (442952906768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402684460660 is a wasteful number, since it uses less digits than its factorization.

402684460660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20134223042 (or 20134223040 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 402684460660 in words is "four hundred two billion, six hundred eighty-four million, four hundred sixty thousand, six hundred sixty".