7292392878721 has 2 divisors, whose sum is σ = 7292392878722. Its totient is φ = 7292392878720.

The previous prime is 7292392878713. The next prime is 7292392878731. The reversal of 7292392878721 is 1278782932927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7208628942321 + 83763936400 = 2684889^2 + 289420^2 .

It is a cyclic number.

It is not a de Polignac number, because 7292392878721 - 2³ = 7292392878713 is a prime.

It is not a weakly prime, because it can be changed into another prime (7292392878731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3646196439360 + 3646196439361.

It is an arithmetic number, because the mean of its divisors is an integer number (3646196439361).

Almost surely, 2^{7292392878721} is an apocalyptic number.

It is an amenable number.

7292392878721 is a deficient number, since it is larger than the sum of its proper divisors (1).

7292392878721 is an equidigital number, since it uses as much as digits as its factorization.

7292392878721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85349376, while the sum is 67.

The spelling of 7292392878721 in words is "seven trillion, two hundred ninety-two billion, three hundred ninety-two million, eight hundred seventy-eight thousand, seven hundred twenty-one".