26213503440 has 80 divisors (see below), whose sum is σ = 82474774848. Its totient is φ = 6885931008.

The previous prime is 26213503439. The next prime is 26213503441. The reversal of 26213503440 is 4430531262.

It is an interprime number because it is at equal distance from previous prime (26213503439) and next prime (26213503441).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 26213503398 and 26213503407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26213503441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799017 + ... + 831176.

Almost surely, 2^26213503440 is an apocalyptic number.

26213503440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26213503440 is an abundant number, since it is smaller than the sum of its proper divisors (56261271408).

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

26213503440 is a wasteful number, since it uses less digits than its factorization.

26213503440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630276 (or 1630270 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The spelling of 26213503440 in words is "twenty-six billion, two hundred thirteen million, five hundred three thousand, four hundred forty".