20287617674 has 8 divisors (see below), whose sum is σ = 30860038368. Its totient is φ = 10000938220.

The previous prime is 20287617643. The next prime is 20287617731. The reversal of 20287617674 is 47671678202.

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

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, 71435132 + ... + 71435415.

It is an arithmetic number, because the mean of its divisors is an integer number (3857504796).

Almost surely, 2^20287617674 is an apocalyptic number.

20287617674 is a deficient number, since it is larger than the sum of its proper divisors (10572420694).

20287617674 is a wasteful number, since it uses less digits than its factorization.

20287617674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142870620.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 20287617674 in words is "twenty billion, two hundred eighty-seven million, six hundred seventeen thousand, six hundred seventy-four".