20436092064 has 72 divisors (see below), whose sum is σ = 58169203092. Its totient is φ = 6805693440.

The previous prime is 20436092059. The next prime is 20436092069. The reversal of 20436092064 is 46029063402.

20436092064 is a `hidden beast` number, since 2 + 0 + 43 + 609 + 2 + 0 + 6 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (20436092059) and next prime (20436092069).

It can be written as a sum of positive squares in 2 ways, for example, as 20422696464 + 13395600 = 142908^2 + 3660^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20436092069) 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, 282324 + ... + 347244.

Almost surely, 2^20436092064 is an apocalyptic number.

20436092064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20436092064 is an abundant number, since it is smaller than the sum of its proper divisors (37733111028).

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

20436092064 is a wasteful number, since it uses less digits than its factorization.

20436092064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66030 (or 66019 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 20436092064 in words is "twenty billion, four hundred thirty-six million, ninety-two thousand, sixty-four".