7564378741 has 2 divisors, whose sum is σ = 7564378742. Its totient is φ = 7564378740.

The previous prime is 7564378729. The next prime is 7564378793. The reversal of 7564378741 is 1478734657.

It is an a-pointer prime, because the next prime (7564378793) can be obtained adding 7564378741 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3785817841 + 3778560900 = 61529^2 + 61470^2 .

It is a cyclic number.

It is not a de Polignac number, because 7564378741 - 2⁹ = 7564378229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7564378711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3782189370 + 3782189371.

It is an arithmetic number, because the mean of its divisors is an integer number (3782189371).

Almost surely, 2^7564378741 is an apocalyptic number.

It is an amenable number.

7564378741 is a deficient number, since it is larger than the sum of its proper divisors (1).

7564378741 is an equidigital number, since it uses as much as digits as its factorization.

7564378741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 52.

The square root of 7564378741 is about 86973.4369850933. The cubic root of 7564378741 is about 1963.0186323496.

The spelling of 7564378741 in words is "seven billion, five hundred sixty-four million, three hundred seventy-eight thousand, seven hundred forty-one".