20694824946 has 80 divisors (see below), whose sum is σ = 46651656480. Its totient is φ = 6856799040.

The previous prime is 20694824939. The next prime is 20694825037. The reversal of 20694824946 is 64942849602.

20694824946 is a `hidden beast` number, since 20 + 69 + 482 + 49 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 20694824892 and 20694824901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36242841 + ... + 36243411.

It is an arithmetic number, because the mean of its divisors is an integer number (583145706).

Almost surely, 2^20694824946 is an apocalyptic number.

20694824946 is an abundant number, since it is smaller than the sum of its proper divisors (25956831534).

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

20694824946 is a wasteful number, since it uses less digits than its factorization.

20694824946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 20694824946 in words is "twenty billion, six hundred ninety-four million, eight hundred twenty-four thousand, nine hundred forty-six".