20708759430 has 64 divisors (see below), whose sum is σ = 56265347520. Its totient is φ = 5418137088.

The previous prime is 20708759429. The next prime is 20708759453. The reversal of 20708759430 is 3495780702.

20708759430 is a `hidden beast` number, since 20 + 7 + 0 + 8 + 7 + 594 + 30 = 666.

It is a super-2 number, since 2×20708759430² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 709267 + ... + 737886.

It is an arithmetic number, because the mean of its divisors is an integer number (879146055).

Almost surely, 2^20708759430 is an apocalyptic number.

20708759430 is an abundant number, since it is smaller than the sum of its proper divisors (35556588090).

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

20708759430 is a wasteful number, since it uses less digits than its factorization.

20708759430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447222 (or 1447216 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 20708759430 in words is "twenty billion, seven hundred eight million, seven hundred fifty-nine thousand, four hundred thirty".