6499081961510 has 32 divisors (see below), whose sum is σ = 12076238287872. Its totient is φ = 2515664348640.

The previous prime is 6499081961507. The next prime is 6499081961543. The reversal of 6499081961510 is 151691809946.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6499081961510.

It is a congruent 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, 6880709 + ... + 7768031.

It is an arithmetic number, because the mean of its divisors is an integer number (377382446496).

Almost surely, 2^{6499081961510} is an apocalyptic number.

6499081961510 is a deficient number, since it is larger than the sum of its proper divisors (5577156326362).

6499081961510 is a wasteful number, since it uses less digits than its factorization.

6499081961510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910988.

The product of its (nonzero) digits is 4199040, while the sum is 59.

The spelling of 6499081961510 in words is "six trillion, four hundred ninety-nine billion, eighty-one million, nine hundred sixty-one thousand, five hundred ten".