20275749982 has 4 divisors (see below), whose sum is σ = 30413624976. Its totient is φ = 10137874990.

The previous prime is 20275749979. The next prime is 20275750007. The reversal of 20275749982 is 28994757202.

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

It is a super-2 number, since 2×20275749982² (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, 5068937494 + ... + 5068937497.

It is an arithmetic number, because the mean of its divisors is an integer number (7603406244).

Almost surely, 2^20275749982 is an apocalyptic number.

20275749982 is a deficient number, since it is larger than the sum of its proper divisors (10137874994).

20275749982 is a wasteful number, since it uses less digits than its factorization.

20275749982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137874993.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 20275749982 in words is "twenty billion, two hundred seventy-five million, seven hundred forty-nine thousand, nine hundred eighty-two".