2642563738428 has 96 divisors (see below), whose sum is σ = 6538097079360. Its totient is φ = 829239183360.

The previous prime is 2642563738421. The next prime is 2642563738519. The reversal of 2642563738428 is 8248373652462.

It is a super-2 number, since 2×2642563738428² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642563738421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24101026 + ... + 24210422.

It is an arithmetic number, because the mean of its divisors is an integer number (68105177910).

Almost surely, 2^{2642563738428} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2642563738428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3269048539680).

2642563738428 is an abundant number, since it is smaller than the sum of its proper divisors (3895533340932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2642563738428 is a wasteful number, since it uses less digits than its factorization.

2642563738428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111167 (or 111165 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 60.

The spelling of 2642563738428 in words is "two trillion, six hundred forty-two billion, five hundred sixty-three million, seven hundred thirty-eight thousand, four hundred twenty-eight".