22144554015402 has 64 divisors (see below), whose sum is σ = 54575426062080. Its totient is φ = 5833276798464.

The previous prime is 22144554015299. The next prime is 22144554015413. The reversal of 22144554015402 is 20451045544122.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 24009243 + ... + 24914510.

It is an arithmetic number, because the mean of its divisors is an integer number (852741032220).

Almost surely, 2^{22144554015402} is an apocalyptic number.

22144554015402 is an abundant number, since it is smaller than the sum of its proper divisors (32430872046678).

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

22144554015402 is a wasteful number, since it uses less digits than its factorization.

22144554015402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48924607.

The product of its (nonzero) digits is 256000, while the sum is 39.

Adding to 22144554015402 its reverse (20451045544122), we get a palindrome (42595599559524).

The spelling of 22144554015402 in words is "twenty-two trillion, one hundred forty-four billion, five hundred fifty-four million, fifteen thousand, four hundred two".