20372266634 has 4 divisors (see below), whose sum is σ = 30558399954. Its totient is φ = 10186133316.

The previous prime is 20372266633. The next prime is 20372266657. The reversal of 20372266634 is 43666227302.

It is a happy number.

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., 11321598409 + 9050668225 = 106403^2 + 95135^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20372266591 and 20372266600.

It is not an unprimeable number, because it can be changed into a prime (20372266633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5093066657 + ... + 5093066660.

Almost surely, 2^20372266634 is an apocalyptic number.

20372266634 is a deficient number, since it is larger than the sum of its proper divisors (10186133320).

20372266634 is a wasteful number, since it uses less digits than its factorization.

20372266634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10186133319.

The product of its (nonzero) digits is 435456, while the sum is 41.

The spelling of 20372266634 in words is "twenty billion, three hundred seventy-two million, two hundred sixty-six thousand, six hundred thirty-four".