26497133460 has 144 divisors (see below), whose sum is σ = 91924560000. Its totient is φ = 6052015872.

The previous prime is 26497133441. The next prime is 26497133479. The reversal of 26497133460 is 6433179462.

26497133460 is a `hidden beast` number, since 26 + 497 + 133 + 4 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26497133441) and next prime (26497133479).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1881726 + ... + 1895754.

It is an arithmetic number, because the mean of its divisors is an integer number (638365000).

Almost surely, 2^26497133460 is an apocalyptic number.

26497133460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26497133460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45962280000).

26497133460 is an abundant number, since it is smaller than the sum of its proper divisors (65427426540).

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

26497133460 is a wasteful number, since it uses less digits than its factorization.

26497133460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15550 (or 15545 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The spelling of 26497133460 in words is "twenty-six billion, four hundred ninety-seven million, one hundred thirty-three thousand, four hundred sixty".