6491644085234 has 32 divisors (see below), whose sum is σ = 12173297227776. Its totient is φ = 2522320373520.

The previous prime is 6491644085233. The next prime is 6491644085237. The reversal of 6491644085234 is 4325804461946.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6491644085234.

It is not an unprimeable number, because it can be changed into a prime (6491644085233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57373364 + ... + 57486399.

It is an arithmetic number, because the mean of its divisors is an integer number (380415538368).

Almost surely, 2^{6491644085234} is an apocalyptic number.

6491644085234 is a deficient number, since it is larger than the sum of its proper divisors (5681653142542).

6491644085234 is a wasteful number, since it uses less digits than its factorization.

6491644085234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114860150.

The product of its (nonzero) digits is 19906560, while the sum is 56.

The spelling of 6491644085234 in words is "six trillion, four hundred ninety-one billion, six hundred forty-four million, eighty-five thousand, two hundred thirty-four".