20244772657634 has 12 divisors (see below), whose sum is σ = 35325062494614. Its totient is φ = 8676331138944.

The previous prime is 20244772657633. The next prime is 20244772657649. The reversal of 20244772657634 is 43675627744202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10967588710225 + 9277183947409 = 3311735^2 + 3045847^2 .

It is a super-2 number, since 2×20244772657634² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20244772657633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103289656319 + ... + 103289656514.

Almost surely, 2^{20244772657634} is an apocalyptic number.

20244772657634 is a deficient number, since it is larger than the sum of its proper divisors (15080289836980).

20244772657634 is a wasteful number, since it uses less digits than its factorization.

20244772657634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206579312849 (or 206579312842 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 59.

The spelling of 20244772657634 in words is "twenty trillion, two hundred forty-four billion, seven hundred seventy-two million, six hundred fifty-seven thousand, six hundred thirty-four".