21375061556262 has 16 divisors (see below), whose sum is σ = 43062167808432. Its totient is φ = 7073013069440.

The previous prime is 21375061556249. The next prime is 21375061556287. The reversal of 21375061556262 is 26265516057312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13001861439 + ... + 13001863082.

It is an arithmetic number, because the mean of its divisors is an integer number (2691385488027).

Almost surely, 2^{21375061556262} is an apocalyptic number.

21375061556262 is an abundant number, since it is smaller than the sum of its proper divisors (21687106252170).

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

21375061556262 is a wasteful number, since it uses less digits than its factorization.

21375061556262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26003724663.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 21375061556262 in words is "twenty-one trillion, three hundred seventy-five billion, sixty-one million, five hundred fifty-six thousand, two hundred sixty-two".