7745147542 has 16 divisors (see below), whose sum is σ = 12675305664. Its totient is φ = 3520125000.

The previous prime is 7745147513. The next prime is 7745147549. The reversal of 7745147542 is 2457415477.

It is a junction number, because it is equal to n+sod(n) for n = 7745147492 and 7745147501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7745147549) 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 7 ways as a sum of consecutive naturals, for example, 281917 + ... + 308167.

It is an arithmetic number, because the mean of its divisors is an integer number (792206604).

Almost surely, 2^7745147542 is an apocalyptic number.

7745147542 is a deficient number, since it is larger than the sum of its proper divisors (4930158122).

7745147542 is a wasteful number, since it uses less digits than its factorization.

7745147542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39675.

The product of its digits is 1097600, while the sum is 46.

The square root of 7745147542 is about 88006.5198834723. The cubic root of 7745147542 is about 1978.5326970437.

The spelling of 7745147542 in words is "seven billion, seven hundred forty-five million, one hundred forty-seven thousand, five hundred forty-two".