20636940514 has 8 divisors (see below), whose sum is σ = 31391402688. Its totient is φ = 10173139620.

The previous prime is 20636940491. The next prime is 20636940539. The reversal of 20636940514 is 41504963602.

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

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 in 3 ways as a sum of consecutive naturals, for example, 72665142 + ... + 72665425.

It is an arithmetic number, because the mean of its divisors is an integer number (3923925336).

Almost surely, 2^20636940514 is an apocalyptic number.

20636940514 is a deficient number, since it is larger than the sum of its proper divisors (10754462174).

20636940514 is a wasteful number, since it uses less digits than its factorization.

20636940514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145330640.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 20636940514 in words is "twenty billion, six hundred thirty-six million, nine hundred forty thousand, five hundred fourteen".