26628497742 has 64 divisors (see below), whose sum is σ = 67198408704. Its totient is φ = 6833151840.

The previous prime is 26628497741. The next prime is 26628497747. The reversal of 26628497742 is 24779482662.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26628497741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308868 + ... + 385559.

It is an arithmetic number, because the mean of its divisors is an integer number (1049975136).

Almost surely, 2^26628497742 is an apocalyptic number.

26628497742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26628497742 is an abundant number, since it is smaller than the sum of its proper divisors (40569910962).

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

26628497742 is a wasteful number, since it uses less digits than its factorization.

26628497742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694533.

The product of its digits is 16257024, while the sum is 57.

The spelling of 26628497742 in words is "twenty-six billion, six hundred twenty-eight million, four hundred ninety-seven thousand, seven hundred forty-two".