21026791479460 has 48 divisors (see below), whose sum is σ = 48043133769456. Its totient is φ = 7683699843072.

The previous prime is 21026791479401. The next prime is 21026791479467. The reversal of 21026791479460 is 6497419762012.

It can be written as a sum of positive squares in 8 ways, for example, as 2023329863844 + 19003461615616 = 1422438^2 + 4359296^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21026791479395 and 21026791479404.

It is not an unprimeable number, because it can be changed into a prime (21026791479467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416842177 + ... + 416892616.

It is an arithmetic number, because the mean of its divisors is an integer number (1000898620197).

Almost surely, 2^{21026791479460} is an apocalyptic number.

21026791479460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21026791479460 is an abundant number, since it is smaller than the sum of its proper divisors (27016342289996).

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

21026791479460 is a wasteful number, since it uses less digits than its factorization.

21026791479460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833734912 (or 833734910 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 58.

The spelling of 21026791479460 in words is "twenty-one trillion, twenty-six billion, seven hundred ninety-one million, four hundred seventy-nine thousand, four hundred sixty".