20837673801 has 72 divisors (see below), whose sum is σ = 36054854784. Its totient is φ = 11554643520.

The previous prime is 20837673793. The next prime is 20837673811. The reversal of 20837673801 is 10837673802.

20837673801 is a `hidden beast` number, since 208 + 3 + 7 + 67 + 380 + 1 = 666.

It is not a de Polignac number, because 20837673801 - 2³ = 20837673793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20837673811) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7031146 + ... + 7034108.

It is an arithmetic number, because the mean of its divisors is an integer number (500761872).

Almost surely, 2^20837673801 is an apocalyptic number.

20837673801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20837673801 is a deficient number, since it is larger than the sum of its proper divisors (15217180983).

20837673801 is a wasteful number, since it uses less digits than its factorization.

20837673801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

Subtracting from 20837673801 its reverse (10837673802), we obtain a palindrome (9999999999).

The spelling of 20837673801 in words is "twenty billion, eight hundred thirty-seven million, six hundred seventy-three thousand, eight hundred one".