20794473748 has 12 divisors (see below), whose sum is σ = 37373851732. Its totient is φ = 10116230400.

The previous prime is 20794473737. The next prime is 20794473761. The reversal of 20794473748 is 84737449702.

It can be written as a sum of positive squares in 2 ways, for example, as 17619376644 + 3175097104 = 132738^2 + 56348^2 .

It is a super-2 number, since 2×20794473748² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 70251453 + ... + 70251748.

Almost surely, 2^20794473748 is an apocalyptic number.

It is an amenable number.

20794473748 is a deficient number, since it is larger than the sum of its proper divisors (16579377984).

20794473748 is a wasteful number, since it uses less digits than its factorization.

20794473748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140503242 (or 140503240 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 55.

The spelling of 20794473748 in words is "twenty billion, seven hundred ninety-four million, four hundred seventy-three thousand, seven hundred forty-eight".