22154354502 has 64 divisors (see below), whose sum is σ = 54054604800. Its totient is φ = 5912192160.

The previous prime is 22154354471. The next prime is 22154354539. The reversal of 22154354502 is 20545345122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138852 + ... + 252167.

It is an arithmetic number, because the mean of its divisors is an integer number (844603200).

Almost surely, 2^22154354502 is an apocalyptic number.

22154354502 is an abundant number, since it is smaller than the sum of its proper divisors (31900250298).

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

22154354502 is a wasteful number, since it uses less digits than its factorization.

22154354502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391121.

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 22154354502 its reverse (20545345122), we get a palindrome (42699699624).

The spelling of 22154354502 in words is "twenty-two billion, one hundred fifty-four million, three hundred fifty-four thousand, five hundred two".