20774247790 has 8 divisors (see below), whose sum is σ = 37393646040. Its totient is φ = 8309699112.

The previous prime is 20774247751. The next prime is 20774247847. The reversal of 20774247790 is 9774247702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1038712380 + ... + 1038712399.

It is an arithmetic number, because the mean of its divisors is an integer number (4674205755).

Almost surely, 2^20774247790 is an apocalyptic number.

20774247790 is a deficient number, since it is larger than the sum of its proper divisors (16619398250).

20774247790 is a wasteful number, since it uses less digits than its factorization.

20774247790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077424786.

The product of its (nonzero) digits is 1382976, while the sum is 49.

The spelling of 20774247790 in words is "twenty billion, seven hundred seventy-four million, two hundred forty-seven thousand, seven hundred ninety".