20757497822 has 4 divisors (see below), whose sum is σ = 31136246736. Its totient is φ = 10378748910.

The previous prime is 20757497821. The next prime is 20757497851. The reversal of 20757497822 is 22879475702.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20757497821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5189374454 + ... + 5189374457.

It is an arithmetic number, because the mean of its divisors is an integer number (7784061684).

Almost surely, 2^20757497822 is an apocalyptic number.

20757497822 is a deficient number, since it is larger than the sum of its proper divisors (10378748914).

20757497822 is a wasteful number, since it uses less digits than its factorization.

20757497822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10378748913.

The product of its (nonzero) digits is 3951360, while the sum is 53.

The spelling of 20757497822 in words is "twenty billion, seven hundred fifty-seven million, four hundred ninety-seven thousand, eight hundred twenty-two".