26301621021 has 16 divisors (see below), whose sum is σ = 39068722560. Its totient is φ = 15627487680.

The previous prime is 26301621011. The next prime is 26301621097. The reversal of 26301621021 is 12012610362.

It is not a de Polignac number, because 26301621021 - 2⁶ = 26301620957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26301620982 and 26301621000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26301621011) 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, 11626465 + ... + 11628726.

It is an arithmetic number, because the mean of its divisors is an integer number (2441795160).

Almost surely, 2^26301621021 is an apocalyptic number.

It is an amenable number.

26301621021 is a deficient number, since it is larger than the sum of its proper divisors (12767101539).

26301621021 is a wasteful number, since it uses less digits than its factorization.

26301621021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23255236.

The product of its (nonzero) digits is 864, while the sum is 24.

The spelling of 26301621021 in words is "twenty-six billion, three hundred one million, six hundred twenty-one thousand, twenty-one".