6496391265451 has 4 divisors (see below), whose sum is σ = 6543127893400. Its totient is φ = 6449654637504.

The previous prime is 6496391265449. The next prime is 6496391265461. The reversal of 6496391265451 is 1545621936946.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6496391265451 - 2¹ = 6496391265449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6496391265451.

It is not an unprimeable number, because it can be changed into a prime (6496391265461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23368313766 + ... + 23368314043.

It is an arithmetic number, because the mean of its divisors is an integer number (1635781973350).

Almost surely, 2^{6496391265451} is an apocalyptic number.

6496391265451 is a deficient number, since it is larger than the sum of its proper divisors (46736627949).

6496391265451 is a wasteful number, since it uses less digits than its factorization.

6496391265451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46736627948.

The product of its digits is 41990400, while the sum is 61.

The spelling of 6496391265451 in words is "six trillion, four hundred ninety-six billion, three hundred ninety-one million, two hundred sixty-five thousand, four hundred fifty-one".