22420556655 has 32 divisors (see below), whose sum is σ = 41004278784. Its totient is φ = 10247725056.

The previous prime is 22420556629. The next prime is 22420556657. The reversal of 22420556655 is 55665502422.

It is not a de Polignac number, because 22420556655 - 2¹³ = 22420548463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420556657) 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, 819934 + ... + 846836.

It is an arithmetic number, because the mean of its divisors is an integer number (1281383712).

Almost surely, 2^22420556655 is an apocalyptic number.

22420556655 is a deficient number, since it is larger than the sum of its proper divisors (18583722129).

22420556655 is a wasteful number, since it uses less digits than its factorization.

22420556655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34855.

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 22420556655 in words is "twenty-two billion, four hundred twenty million, five hundred fifty-six thousand, six hundred fifty-five".