6544402112402 has 32 divisors (see below), whose sum is σ = 12239006256000. Its totient is φ = 2549741143680.

The previous prime is 6544402112389. The next prime is 6544402112429. The reversal of 6544402112402 is 2042112044456.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23211974 + ... + 23492222.

It is an arithmetic number, because the mean of its divisors is an integer number (382468945500).

Almost surely, 2^{6544402112402} is an apocalyptic number.

6544402112402 is a deficient number, since it is larger than the sum of its proper divisors (5694604143598).

6544402112402 is a wasteful number, since it uses less digits than its factorization.

6544402112402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431906.

The product of its (nonzero) digits is 61440, while the sum is 35.

Adding to 6544402112402 its reverse (2042112044456), we get a palindrome (8586514156858).

The spelling of 6544402112402 in words is "six trillion, five hundred forty-four billion, four hundred two million, one hundred twelve thousand, four hundred two".