26420640733 has 16 divisors (see below), whose sum is σ = 27542592000. Its totient is φ = 25313504832.

The previous prime is 26420640731. The next prime is 26420640739. The reversal of 26420640733 is 33704602462.

It is a cyclic number.

It is not a de Polignac number, because 26420640733 - 2¹ = 26420640731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26420640692 and 26420640701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26420640731) 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, 2032308 + ... + 2045266.

It is an arithmetic number, because the mean of its divisors is an integer number (1721412000).

Almost surely, 2^26420640733 is an apocalyptic number.

It is an amenable number.

26420640733 is a deficient number, since it is larger than the sum of its proper divisors (1121951267).

26420640733 is a wasteful number, since it uses less digits than its factorization.

26420640733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13524.

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 26420640733 in words is "twenty-six billion, four hundred twenty million, six hundred forty thousand, seven hundred thirty-three".