21026361433 has 48 divisors (see below), whose sum is σ = 26990333568. Its totient is φ = 16196544000.

The previous prime is 21026361401. The next prime is 21026361469. The reversal of 21026361433 is 33416362012.

It is not a de Polignac number, because 21026361433 - 2⁵ = 21026361401 is a prime.

It is a super-2 number, since 2×21026361433² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21026361395 and 21026361404.

It is not an unprimeable number, because it can be changed into a prime (21026361133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20393628 + ... + 20394658.

It is an arithmetic number, because the mean of its divisors is an integer number (562298616).

Almost surely, 2^21026361433 is an apocalyptic number.

It is an amenable number.

21026361433 is a deficient number, since it is larger than the sum of its proper divisors (5963972135).

21026361433 is a wasteful number, since it uses less digits than its factorization.

21026361433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1447 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The spelling of 21026361433 in words is "twenty-one billion, twenty-six million, three hundred sixty-one thousand, four hundred thirty-three".