26235016840 has 32 divisors (see below), whose sum is σ = 62135568000. Its totient is φ = 9941690304.

The previous prime is 26235016817. The next prime is 26235016849. The reversal of 26235016840 is 4861053262.

It is a super-2 number, since 2×26235016840² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26235016840.

It is not an unprimeable number, because it can be changed into a prime (26235016849) 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 7 ways as a sum of consecutive naturals, for example, 17259120 + ... + 17260639.

It is an arithmetic number, because the mean of its divisors is an integer number (1941736500).

Almost surely, 2^26235016840 is an apocalyptic number.

26235016840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26235016840 is an abundant number, since it is smaller than the sum of its proper divisors (35900551160).

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

26235016840 is a wasteful number, since it uses less digits than its factorization.

26235016840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34519789 (or 34519785 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 26235016840 in words is "twenty-six billion, two hundred thirty-five million, sixteen thousand, eight hundred forty".