20651153914 has 4 divisors (see below), whose sum is σ = 30976730874. Its totient is φ = 10325576956.

The previous prime is 20651153879. The next prime is 20651153917. The reversal of 20651153914 is 41935115602.

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

It can be written as a sum of positive squares in only one way, i.e., 15708360889 + 4942793025 = 125333^2 + 70305^2 .

It is not an unprimeable number, because it can be changed into a prime (20651153917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5162788477 + ... + 5162788480.

Almost surely, 2^20651153914 is an apocalyptic number.

20651153914 is a deficient number, since it is larger than the sum of its proper divisors (10325576960).

20651153914 is a wasteful number, since it uses less digits than its factorization.

20651153914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10325576959.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 20651153914 in words is "twenty billion, six hundred fifty-one million, one hundred fifty-three thousand, nine hundred fourteen".