20076794278 has 4 divisors (see below), whose sum is σ = 30115191420. Its totient is φ = 10038397138.

The previous prime is 20076794251. The next prime is 20076794281. The reversal of 20076794278 is 87249767002.

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

It is a super-2 number, since 2×20076794278² (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 (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5019198568 + ... + 5019198571.

It is an arithmetic number, because the mean of its divisors is an integer number (7528797855).

Almost surely, 2^20076794278 is an apocalyptic number.

20076794278 is a deficient number, since it is larger than the sum of its proper divisors (10038397142).

20076794278 is a wasteful number, since it uses less digits than its factorization.

20076794278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038397141.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 20076794278 in words is "twenty billion, seventy-six million, seven hundred ninety-four thousand, two hundred seventy-eight".