20126013772 has 24 divisors (see below), whose sum is σ = 36251082560. Its totient is φ = 9772738560.

The previous prime is 20126013769. The next prime is 20126013797. The reversal of 20126013772 is 27731062102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502773 + ... + 541324.

Almost surely, 2^20126013772 is an apocalyptic number.

It is an amenable number.

20126013772 is a deficient number, since it is larger than the sum of its proper divisors (16125068788).

20126013772 is a wasteful number, since it uses less digits than its factorization.

20126013772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044241 (or 1044239 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

Adding to 20126013772 its reverse (27731062102), we get a palindrome (47857075874).

The spelling of 20126013772 in words is "twenty billion, one hundred twenty-six million, thirteen thousand, seven hundred seventy-two".