26215403020 has 24 divisors (see below), whose sum is σ = 55177768800. Its totient is φ = 10462271232.

The previous prime is 26215402979. The next prime is 26215403041. The reversal of 26215403020 is 2030451262.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484125 + ... + 1501684.

It is an arithmetic number, because the mean of its divisors is an integer number (2299073700).

Almost surely, 2^26215403020 is an apocalyptic number.

26215403020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26215403020 is an abundant number, since it is smaller than the sum of its proper divisors (28962365780).

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

26215403020 is a wasteful number, since it uses less digits than its factorization.

26215403020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2986257 (or 2986255 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 26215403020 its reverse (2030451262), we get a palindrome (28245854282).

The spelling of 26215403020 in words is "twenty-six billion, two hundred fifteen million, four hundred three thousand, twenty".