20790691075 has 48 divisors (see below), whose sum is σ = 32161941504. Its totient is φ = 12952339200.

The previous prime is 20790691073. The next prime is 20790691111. The reversal of 20790691075 is 57019609702.

It is a happy number.

It is not a de Polignac number, because 20790691075 - 2¹ = 20790691073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20790691073) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5035662 + ... + 5039788.

It is an arithmetic number, because the mean of its divisors is an integer number (670040448).

Almost surely, 2^20790691075 is an apocalyptic number.

20790691075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20790691075 is a deficient number, since it is larger than the sum of its proper divisors (11371250429).

20790691075 is a wasteful number, since it uses less digits than its factorization.

20790691075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772 (or 6767 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 46.

The spelling of 20790691075 in words is "twenty billion, seven hundred ninety million, six hundred ninety-one thousand, seventy-five".