6406252372444 has 24 divisors (see below), whose sum is σ = 11514913806368. Its totient is φ = 3116291641920.

The previous prime is 6406252372397. The next prime is 6406252372493. The reversal of 6406252372444 is 4442732526046.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68667 + ... + 3580114.

Almost surely, 2^{6406252372444} is an apocalyptic number.

It is an amenable number.

6406252372444 is a deficient number, since it is larger than the sum of its proper divisors (5108661433924).

6406252372444 is a wasteful number, since it uses less digits than its factorization.

6406252372444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3660685 (or 3660683 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 49.

The spelling of 6406252372444 in words is "six trillion, four hundred six billion, two hundred fifty-two million, three hundred seventy-two thousand, four hundred forty-four".