6499970768123 has 16 divisors (see below), whose sum is σ = 7752589533696. Its totient is φ = 5328431856000.

The previous prime is 6499970768023. The next prime is 6499970768147. The reversal of 6499970768123 is 3218670799946.

It is a cyclic number.

It is not a de Polignac number, because 6499970768123 - 2¹⁰ = 6499970767099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6499970768173) 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, 1620878 + ... + 3953123.

It is an arithmetic number, because the mean of its divisors is an integer number (484536845856).

Almost surely, 2^{6499970768123} is an apocalyptic number.

6499970768123 is a deficient number, since it is larger than the sum of its proper divisors (1252618765573).

6499970768123 is a wasteful number, since it uses less digits than its factorization.

6499970768123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5581274.

The product of its (nonzero) digits is 246903552, while the sum is 71.

The spelling of 6499970768123 in words is "six trillion, four hundred ninety-nine billion, nine hundred seventy million, seven hundred sixty-eight thousand, one hundred twenty-three".