22051544243402 has 64 divisors (see below), whose sum is σ = 35934264576000. Its totient is φ = 10114707456000.

The previous prime is 22051544243389. The next prime is 22051544243413. The reversal of 22051544243402 is 20434244515022.

It is a Harshad number since it is a multiple of its sum of digits (38).

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, 133530002 + ... + 133695042.

It is an arithmetic number, because the mean of its divisors is an integer number (561472884000).

Almost surely, 2^{22051544243402} is an apocalyptic number.

22051544243402 is a deficient number, since it is larger than the sum of its proper divisors (13882720332598).

22051544243402 is a wasteful number, since it uses less digits than its factorization.

22051544243402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165743.

The product of its (nonzero) digits is 307200, while the sum is 38.

Adding to 22051544243402 its reverse (20434244515022), we get a palindrome (42485788758424).

The spelling of 22051544243402 in words is "twenty-two trillion, fifty-one billion, five hundred forty-four million, two hundred forty-three thousand, four hundred two".