2144155223402 has 4 divisors (see below), whose sum is σ = 3216232835106. Its totient is φ = 1072077611700.

The previous prime is 2144155223387. The next prime is 2144155223459. The reversal of 2144155223402 is 2043225514412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1082742221401 + 1061413002001 = 1040549^2 + 1030249^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536038805849 + ... + 536038805852.

Almost surely, 2^{2144155223402} is an apocalyptic number.

2144155223402 is a deficient number, since it is larger than the sum of its proper divisors (1072077611704).

2144155223402 is a wasteful number, since it uses less digits than its factorization.

2144155223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072077611703.

The product of its (nonzero) digits is 76800, while the sum is 35.

The spelling of 2144155223402 in words is "two trillion, one hundred forty-four billion, one hundred fifty-five million, two hundred twenty-three thousand, four hundred two".