7578545156 has 24 divisors (see below), whose sum is σ = 16323021120. Its totient is φ = 2998105632.

The previous prime is 7578545153. The next prime is 7578545173. The reversal of 7578545156 is 6515458757.

It is a junction number, because it is equal to n+sod(n) for n = 7578545098 and 7578545107.

It is not an unprimeable number, because it can be changed into a prime (7578545153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10409726 + ... + 10410453.

It is an arithmetic number, because the mean of its divisors is an integer number (680125880).

Almost surely, 2^7578545156 is an apocalyptic number.

It is an amenable number.

7578545156 is an abundant number, since it is smaller than the sum of its proper divisors (8744475964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7578545156 is a wasteful number, since it uses less digits than its factorization.

7578545156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20820203 (or 20820201 counting only the distinct ones).

The product of its digits is 5880000, while the sum is 53.

The square root of 7578545156 is about 87054.8399343770. The cubic root of 7578545156 is about 1964.2433019749.

The spelling of 7578545156 in words is "seven billion, five hundred seventy-eight million, five hundred forty-five thousand, one hundred fifty-six".