26501886436 has 27 divisors (see below), whose sum is σ = 48496124131. Its totient is φ = 12671233784.

The previous prime is 26501886431. The next prime is 26501886461. The reversal of 26501886436 is 63468810562.

It is a happy number.

The square root of 26501886436 is 162794.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26501886436.

It is not an unprimeable number, because it can be changed into a prime (26501886431) 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 8 ways as a sum of consecutive naturals, for example, 7486755 + ... + 7490293.

Almost surely, 2^26501886436 is an apocalyptic number.

26501886436 is the 162794-th square number.

It is an amenable number.

26501886436 is a deficient number, since it is larger than the sum of its proper divisors (21994237695).

26501886436 is an frugal number, since it uses more digits than its factorization.

26501886436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128 (or 3564 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

Multiplying 26501886436 by its sum of digits (49), we get a square (1298592435364 = 1139558²).

The spelling of 26501886436 in words is "twenty-six billion, five hundred one million, eight hundred eighty-six thousand, four hundred thirty-six".