7540705729 has 2 divisors, whose sum is σ = 7540705730. Its totient is φ = 7540705728.

The previous prime is 7540705723. The next prime is 7540705741. The reversal of 7540705729 is 9275070457.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4415336704 + 3125369025 = 66448^2 + 55905^2 .

It is a cyclic number.

It is not a de Polignac number, because 7540705729 - 2¹⁵ = 7540672961 is a prime.

It is not a weakly prime, because it can be changed into another prime (7540705723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3770352864 + 3770352865.

It is an arithmetic number, because the mean of its divisors is an integer number (3770352865).

Almost surely, 2^7540705729 is an apocalyptic number.

It is an amenable number.

7540705729 is a deficient number, since it is larger than the sum of its proper divisors (1).

7540705729 is an equidigital number, since it uses as much as digits as its factorization.

7540705729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 46.

The square root of 7540705729 is about 86837.2369954273. The cubic root of 7540705729 is about 1960.9687118461.

The spelling of 7540705729 in words is "seven billion, five hundred forty million, seven hundred five thousand, seven hundred twenty-nine".