22143202351550 has 48 divisors (see below), whose sum is σ = 48588512612352. Its totient is φ = 7347053311200.

The previous prime is 22143202351537. The next prime is 22143202351601. The reversal of 22143202351550 is 5515320234122.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 22143202351550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1020413222 + ... + 1020434921.

It is an arithmetic number, because the mean of its divisors is an integer number (1012260679424).

Almost surely, 2^{22143202351550} is an apocalyptic number.

22143202351550 is an abundant number, since it is smaller than the sum of its proper divisors (26445310260802).

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

22143202351550 is a wasteful number, since it uses less digits than its factorization.

22143202351550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040848193 (or 2040848188 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 22143202351550 its reverse (5515320234122), we get a palindrome (27658522585672).

The spelling of 22143202351550 in words is "twenty-two trillion, one hundred forty-three billion, two hundred two million, three hundred fifty-one thousand, five hundred fifty".