7145137477 has 2 divisors, whose sum is σ = 7145137478. Its totient is φ = 7145137476.

The previous prime is 7145137429. The next prime is 7145137487. The reversal of 7145137477 is 7747315417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6255069921 + 890067556 = 79089^2 + 29834^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7145137477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7145137487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3572568738 + 3572568739.

It is an arithmetic number, because the mean of its divisors is an integer number (3572568739).

Almost surely, 2^7145137477 is an apocalyptic number.

It is an amenable number.

7145137477 is a deficient number, since it is larger than the sum of its proper divisors (1).

7145137477 is an equidigital number, since it uses as much as digits as its factorization.

7145137477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576240, while the sum is 46.

The square root of 7145137477 is about 84528.9150350340. The cubic root of 7145137477 is about 1926.0617049416.

The spelling of 7145137477 in words is "seven billion, one hundred forty-five million, one hundred thirty-seven thousand, four hundred seventy-seven".