26161206620 has 24 divisors (see below), whose sum is σ = 54946191888. Its totient is φ = 10463024000.

The previous prime is 26161206607. The next prime is 26161206649. The reversal of 26161206620 is 2660216162.

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 7 ways as a sum of consecutive naturals, for example, 62195 + ... + 237045.

It is an arithmetic number, because the mean of its divisors is an integer number (2289424662).

Almost surely, 2^26161206620 is an apocalyptic number.

26161206620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26161206620 is an abundant number, since it is smaller than the sum of its proper divisors (28784985268).

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

26161206620 is a wasteful number, since it uses less digits than its factorization.

26161206620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182341 (or 182339 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The spelling of 26161206620 in words is "twenty-six billion, one hundred sixty-one million, two hundred six thousand, six hundred twenty".