2643072912461 has 8 divisors (see below), whose sum is σ = 2728921100544. Its totient is φ = 2557261460160.

The previous prime is 2643072912457. The next prime is 2643072912497. The reversal of 2643072912461 is 1642192703462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2643072912461 - 2² = 2643072912457 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643072918461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9037676 + ... + 9325541.

It is an arithmetic number, because the mean of its divisors is an integer number (341115137568).

Almost surely, 2^{2643072912461} is an apocalyptic number.

It is an amenable number.

2643072912461 is a deficient number, since it is larger than the sum of its proper divisors (85848188083).

2643072912461 is a wasteful number, since it uses less digits than its factorization.

2643072912461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367891.

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 2643072912461 in words is "two trillion, six hundred forty-three billion, seventy-two million, nine hundred twelve thousand, four hundred sixty-one".