20377637722 has 48 divisors (see below), whose sum is σ = 33639909120. Its totient is φ = 9251860800.

The previous prime is 20377637719. The next prime is 20377637723. The reversal of 20377637722 is 22773677302.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20377637723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17253972 + ... + 17255152.

It is an arithmetic number, because the mean of its divisors is an integer number (700831440).

Almost surely, 2^20377637722 is an apocalyptic number.

20377637722 is a deficient number, since it is larger than the sum of its proper divisors (13262271398).

20377637722 is a wasteful number, since it uses less digits than its factorization.

20377637722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 1037232, while the sum is 46.

The spelling of 20377637722 in words is "twenty billion, three hundred seventy-seven million, six hundred thirty-seven thousand, seven hundred twenty-two".