6461239976567 has 4 divisors (see below), whose sum is σ = 6462550312056. Its totient is φ = 6459929641080.

The previous prime is 6461239976551. The next prime is 6461239976579. The reversal of 6461239976567 is 7656799321646.

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 6461239976567 - 2⁴ = 6461239976551 is a prime.

It is a super-3 number, since 3×6461239976567³ (a number of 39 digits) contains 333 as substring.

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 6461239976567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6461239976507) 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, 655160348 + ... + 655170209.

It is an arithmetic number, because the mean of its divisors is an integer number (1615637578014).

Almost surely, 2^{6461239976567} is an apocalyptic number.

6461239976567 is a deficient number, since it is larger than the sum of its proper divisors (1310335489).

6461239976567 is a wasteful number, since it uses less digits than its factorization.

6461239976567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310335488.

The product of its digits is 617258880, while the sum is 71.

The spelling of 6461239976567 in words is "six trillion, four hundred sixty-one billion, two hundred thirty-nine million, nine hundred seventy-six thousand, five hundred sixty-seven".