7140862081 has 2 divisors, whose sum is σ = 7140862082. Its totient is φ = 7140862080.

The previous prime is 7140862073. The next prime is 7140862109. The reversal of 7140862081 is 1802680417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6928897600 + 211964481 = 83240^2 + 14559^2 .

It is an emirp because it is prime and its reverse (1802680417) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7140862081 - 2³ = 7140862073 is a prime.

It is a super-2 number, since 2×7140862081² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7140862081.

It is not a weakly prime, because it can be changed into another prime (7140862021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570431040 + 3570431041.

It is an arithmetic number, because the mean of its divisors is an integer number (3570431041).

Almost surely, 2^7140862081 is an apocalyptic number.

It is an amenable number.

7140862081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7140862081 is an equidigital number, since it uses as much as digits as its factorization.

7140862081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 7140862081 is about 84503.6217034513. The cubic root of 7140862081 is about 1925.6774660319.

It can be divided in two parts, 7140 and 862081, that added together give a triangular number (869221 = T₁₃₁₈).

The spelling of 7140862081 in words is "seven billion, one hundred forty million, eight hundred sixty-two thousand, eighty-one".