7555742945 has 4 divisors (see below), whose sum is σ = 9066891540. Its totient is φ = 6044594352.

The previous prime is 7555742927. The next prime is 7555742947. The reversal of 7555742945 is 5492475557.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1451914816 + 6103828129 = 38104^2 + 78127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7555742945 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7555742947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755574290 + ... + 755574299.

It is an arithmetic number, because the mean of its divisors is an integer number (2266722885).

Almost surely, 2^7555742945 is an apocalyptic number.

It is an amenable number.

7555742945 is a deficient number, since it is larger than the sum of its proper divisors (1511148595).

7555742945 is a wasteful number, since it uses less digits than its factorization.

7555742945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511148594.

The product of its digits is 8820000, while the sum is 53.

The square root of 7555742945 is about 86923.7766379257. The cubic root of 7555742945 is about 1962.2713278125.

The spelling of 7555742945 in words is "seven billion, five hundred fifty-five million, seven hundred forty-two thousand, nine hundred forty-five".