20005101764650 has 12 divisors (see below), whose sum is σ = 37209489282342. Its totient is φ = 8002040705840.

The previous prime is 20005101764621. The next prime is 20005101764779. The reversal of 20005101764650 is 5646710150002.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 15691002448969 + 4314099315681 = 3961187^2 + 2077041^2 .

It is a super-2 number, since 2×20005101764650² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 200051017597 + ... + 200051017696.

Almost surely, 2^{20005101764650} is an apocalyptic number.

20005101764650 is a deficient number, since it is larger than the sum of its proper divisors (17204387517692).

20005101764650 is a wasteful number, since it uses less digits than its factorization.

20005101764650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400102035305 (or 400102035300 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 20005101764650 in words is "twenty trillion, five billion, one hundred one million, seven hundred sixty-four thousand, six hundred fifty".