2646266426242 has 4 divisors (see below), whose sum is σ = 3969399639366. Its totient is φ = 1323133213120.

The previous prime is 2646266426233. The next prime is 2646266426261. The reversal of 2646266426242 is 2426246626462.

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

It can be written as a sum of positive squares in only one way, i.e., 2637054457801 + 9211968441 = 1623901^2 + 95979^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2646266426242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661566606559 + ... + 661566606562.

Almost surely, 2^{2646266426242} is an apocalyptic number.

2646266426242 is a deficient number, since it is larger than the sum of its proper divisors (1323133213124).

2646266426242 is a wasteful number, since it uses less digits than its factorization.

2646266426242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323133213123.

The product of its digits is 15925248, while the sum is 52.

The spelling of 2646266426242 in words is "two trillion, six hundred forty-six billion, two hundred sixty-six million, four hundred twenty-six thousand, two hundred forty-two".