7540456779 has 40 divisors (see below), whose sum is σ = 11665629360. Its totient is φ = 4848185664.

The previous prime is 7540456753. The next prime is 7540456783. The reversal of 7540456779 is 9776540457.

7540456779 is a `hidden beast` number, since 7 + 5 + 4 + 0 + 4 + 567 + 79 = 666.

It is not a de Polignac number, because 7540456779 - 2¹² = 7540452683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7540456789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3820837 + ... + 3822809.

It is an arithmetic number, because the mean of its divisors is an integer number (291640734).

Almost surely, 2^7540456779 is an apocalyptic number.

7540456779 is a deficient number, since it is larger than the sum of its proper divisors (4125172581).

7540456779 is a wasteful number, since it uses less digits than its factorization.

7540456779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641 (or 3632 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 54.

The square root of 7540456779 is about 86835.8035547550. The cubic root of 7540456779 is about 1960.9471317026.

The spelling of 7540456779 in words is "seven billion, five hundred forty million, four hundred fifty-six thousand, seven hundred seventy-nine".