7266836736021 has 4 divisors (see below), whose sum is σ = 9689115648032. Its totient is φ = 4844557824012.

The previous prime is 7266836735947. The next prime is 7266836736053. The reversal of 7266836736021 is 1206376386627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7266836736021 - 2²³ = 7266828347413 is a prime.

It is a super-2 number, since 2×7266836736021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7266836736221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211139456001 + ... + 1211139456006.

It is an arithmetic number, because the mean of its divisors is an integer number (2422278912008).

Almost surely, 2^{7266836736021} is an apocalyptic number.

It is an amenable number.

7266836736021 is a deficient number, since it is larger than the sum of its proper divisors (2422278912011).

7266836736021 is a wasteful number, since it uses less digits than its factorization.

7266836736021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422278912010.

The product of its (nonzero) digits is 18289152, while the sum is 57.

The spelling of 7266836736021 in words is "seven trillion, two hundred sixty-six billion, eight hundred thirty-six million, seven hundred thirty-six thousand, twenty-one".