20137206554 has 16 divisors (see below), whose sum is σ = 32226771456. Its totient is φ = 9403992000.

The previous prime is 20137206553. The next prime is 20137206589. The reversal of 20137206554 is 45560273102.

It is not an unprimeable number, because it can be changed into a prime (20137206553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2256122 + ... + 2265029.

It is an arithmetic number, because the mean of its divisors is an integer number (2014173216).

Almost surely, 2^20137206554 is an apocalyptic number.

20137206554 is a deficient number, since it is larger than the sum of its proper divisors (12089564902).

20137206554 is a wasteful number, since it uses less digits than its factorization.

20137206554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521301.

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 20137206554 its reverse (45560273102), we get a palindrome (65697479656).

The spelling of 20137206554 in words is "twenty billion, one hundred thirty-seven million, two hundred six thousand, five hundred fifty-four".