402818729652 has 36 divisors (see below), whose sum is σ = 1034928636196. Its totient is φ = 132071713920.

The previous prime is 402818729627. The next prime is 402818729669. The reversal of 402818729652 is 256927818204.

402818729652 is a `hidden beast` number, since 402 + 8 + 187 + 2 + 9 + 6 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 216163624356 + 186655105296 = 464934^2 + 432036^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×402818729652² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91714273 + ... + 91718664.

Almost surely, 2^402818729652 is an apocalyptic number.

It is an amenable number.

402818729652 is an abundant number, since it is smaller than the sum of its proper divisors (632109906544).

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

402818729652 is a wasteful number, since it uses less digits than its factorization.

402818729652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183433008 (or 183433003 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 402818729652 in words is "four hundred two billion, eight hundred eighteen million, seven hundred twenty-nine thousand, six hundred fifty-two".