26109389056 has 27 divisors (see below), whose sum is σ = 52121949411. Its totient is φ = 13053401856.

The previous prime is 26109389041. The next prime is 26109389071. The reversal of 26109389056 is 65098390162.

The square root of 26109389056 is 161584.

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

It is an interprime number because it is at equal distance from previous prime (26109389041) and next prime (26109389071).

It is a super-2 number, since 2×26109389056² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2580295 + ... + 2590393.

Almost surely, 2^26109389056 is an apocalyptic number.

26109389056 is the 161584-th square number.

It is an amenable number.

26109389056 is a deficient number, since it is larger than the sum of its proper divisors (26012560355).

26109389056 is an frugal number, since it uses more digits than its factorization.

26109389056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20214 (or 10101 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 49.

Multiplying 26109389056 by its sum of digits (49), we get a square (1279360063744 = 1131088²).

The spelling of 26109389056 in words is "twenty-six billion, one hundred nine million, three hundred eighty-nine thousand, fifty-six".