20435853402 has 24 divisors (see below), whose sum is σ = 44280422784. Its totient is φ = 6811529544.

The previous prime is 20435853343. The next prime is 20435853407.

20435853402 is a `hidden beast` number, since 2 + 0 + 43 + 585 + 34 + 0 + 2 = 666.

20435853402 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20435853407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 430753 + ... + 475835.

It is an arithmetic number, because the mean of its divisors is an integer number (1845017616).

Almost surely, 2^20435853402 is an apocalyptic number.

20435853402 is an abundant number, since it is smaller than the sum of its proper divisors (23844569382).

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

20435853402 is a wasteful number, since it uses less digits than its factorization.

20435853402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70274 (or 70271 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 20435853402 in words is "twenty billion, four hundred thirty-five million, eight hundred fifty-three thousand, four hundred two".