2623645557322 has 4 divisors (see below), whose sum is σ = 3935468335986. Its totient is φ = 1311822778660.

The previous prime is 2623645557257. The next prime is 2623645557329. The reversal of 2623645557322 is 2237555463262.

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., 2622783489001 + 862068321 = 1619501^2 + 29361^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2623645557322.

It is not an unprimeable number, because it can be changed into a prime (2623645557329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655911389329 + ... + 655911389332.

Almost surely, 2^{2623645557322} is an apocalyptic number.

2623645557322 is a deficient number, since it is larger than the sum of its proper divisors (1311822778664).

2623645557322 is a wasteful number, since it uses less digits than its factorization.

2623645557322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311822778663.

The product of its digits is 18144000, while the sum is 52.

The spelling of 2623645557322 in words is "two trillion, six hundred twenty-three billion, six hundred forty-five million, five hundred fifty-seven thousand, three hundred twenty-two".