20554606722 has 64 divisors (see below), whose sum is σ = 44601145344. Its totient is φ = 6277551360.

The previous prime is 20554606691. The next prime is 20554606727. The reversal of 20554606722 is 22760645502.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (20554606727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8296948 + ... + 8299424.

It is an arithmetic number, because the mean of its divisors is an integer number (696892896).

Almost surely, 2^20554606722 is an apocalyptic number.

20554606722 is an abundant number, since it is smaller than the sum of its proper divisors (24046538622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20554606722 is a wasteful number, since it uses less digits than its factorization.

20554606722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243.

The product of its (nonzero) digits is 201600, while the sum is 39.

The spelling of 20554606722 in words is "twenty billion, five hundred fifty-four million, six hundred six thousand, seven hundred twenty-two".