20102220654 has 64 divisors (see below), whose sum is σ = 41167650816. Its totient is φ = 6542774784.

The previous prime is 20102220653. The next prime is 20102220659. The reversal of 20102220654 is 45602220102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102220653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13517899 + ... + 13519385.

It is an arithmetic number, because the mean of its divisors is an integer number (643244544).

Almost surely, 2^20102220654 is an apocalyptic number.

20102220654 is an abundant number, since it is smaller than the sum of its proper divisors (21065430162).

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

20102220654 is a wasteful number, since it uses less digits than its factorization.

20102220654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20102220654 its reverse (45602220102), we get a palindrome (65704440756).

The spelling of 20102220654 in words is "twenty billion, one hundred two million, two hundred twenty thousand, six hundred fifty-four".