2691623640607 has 16 divisors (see below), whose sum is σ = 3071058939648. Its totient is φ = 2335136791680.

The previous prime is 2691623640599. The next prime is 2691623640619. The reversal of 2691623640607 is 7060463261962.

It is not a de Polignac number, because 2691623640607 - 2³ = 2691623640599 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 (2691623640107) 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, 12175473 + ... + 12394570.

It is an arithmetic number, because the mean of its divisors is an integer number (191941183728).

Almost surely, 2^{2691623640607} is an apocalyptic number.

2691623640607 is a deficient number, since it is larger than the sum of its proper divisors (379435299041).

2691623640607 is a wasteful number, since it uses less digits than its factorization.

2691623640607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24570510.

The product of its (nonzero) digits is 3919104, while the sum is 52.

The spelling of 2691623640607 in words is "two trillion, six hundred ninety-one billion, six hundred twenty-three million, six hundred forty thousand, six hundred seven".