26540512620 has 48 divisors (see below), whose sum is σ = 74665667328. Its totient is φ = 7043924160.

The previous prime is 26540512619. The next prime is 26540512633. The reversal of 26540512620 is 2621504562.

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 15 ways as a sum of consecutive naturals, for example, 1035544 + ... + 1060863.

It is an arithmetic number, because the mean of its divisors is an integer number (1555534736).

Almost surely, 2^26540512620 is an apocalyptic number.

26540512620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26540512620 is an abundant number, since it is smaller than the sum of its proper divisors (48125154708).

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

26540512620 is a wasteful number, since it uses less digits than its factorization.

26540512620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096630 (or 2096628 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 26540512620 in words is "twenty-six billion, five hundred forty million, five hundred twelve thousand, six hundred twenty".