26274516534 has 64 divisors (see below), whose sum is σ = 66852794880. Its totient is φ = 7493070240.

The previous prime is 26274516511. The next prime is 26274516557. The reversal of 26274516534 is 43561547262.

26274516534 is a `hidden beast` number, since 2 + 62 + 7 + 4 + 51 + 6 + 534 = 666.

It is an interprime number because it is at equal distance from previous prime (26274516511) and next prime (26274516557).

It is a self number, because there is not a number n which added to its sum of digits gives 26274516534.

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 31 ways as a sum of consecutive naturals, for example, 140257 + ... + 268739.

It is an arithmetic number, because the mean of its divisors is an integer number (1044574920).

Almost surely, 2^26274516534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26274516534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33426397440).

26274516534 is an abundant number, since it is smaller than the sum of its proper divisors (40578278346).

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

26274516534 is a wasteful number, since it uses less digits than its factorization.

26274516534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129042 (or 129036 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The spelling of 26274516534 in words is "twenty-six billion, two hundred seventy-four million, five hundred sixteen thousand, five hundred thirty-four".