7426860066321 has 4 divisors (see below), whose sum is σ = 9902480088432. Its totient is φ = 4951240044212.

The previous prime is 7426860066293. The next prime is 7426860066419. The reversal of 7426860066321 is 1236600686247.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 7426860066321 - 2²⁶ = 7426792957457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7426860061321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1237810011051 + ... + 1237810011056.

It is an arithmetic number, because the mean of its divisors is an integer number (2475620022108).

Almost surely, 2^{7426860066321} is an apocalyptic number.

It is an amenable number.

7426860066321 is a deficient number, since it is larger than the sum of its proper divisors (2475620022111).

7426860066321 is a wasteful number, since it uses less digits than its factorization.

7426860066321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475620022110.

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 7426860066321 in words is "seven trillion, four hundred twenty-six billion, eight hundred sixty million, sixty-six thousand, three hundred twenty-one".