7156400243 has 2 divisors, whose sum is σ = 7156400244. Its totient is φ = 7156400242.

The previous prime is 7156400239. The next prime is 7156400249. The reversal of 7156400243 is 3420046517.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7156400243 - 2² = 7156400239 is a prime.

It is not a weakly prime, because it can be changed into another prime (7156400249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3578200121 + 3578200122.

It is an arithmetic number, because the mean of its divisors is an integer number (3578200122).

Almost surely, 2^7156400243 is an apocalyptic number.

7156400243 is a deficient number, since it is larger than the sum of its proper divisors (1).

7156400243 is an equidigital number, since it uses as much as digits as its factorization.

7156400243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 7156400243 is about 84595.5095912307. The cubic root of 7156400243 is about 1927.0731804301.

The spelling of 7156400243 in words is "seven billion, one hundred fifty-six million, four hundred thousand, two hundred forty-three".