8157773546 has 16 divisors (see below), whose sum is σ = 13244843304. Its totient is φ = 3746011584.

The previous prime is 8157773539. The next prime is 8157773599. The reversal of 8157773546 is 6453777518.

It can be written as a sum of positive squares in 4 ways, for example, as 8039812225 + 117961321 = 89665^2 + 10861^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791225 + ... + 801468.

Almost surely, 2^8157773546 is an apocalyptic number.

8157773546 is a deficient number, since it is larger than the sum of its proper divisors (5087069758).

8157773546 is a wasteful number, since it uses less digits than its factorization.

8157773546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592905.

The product of its digits is 4939200, while the sum is 53.

The square root of 8157773546 is about 90320.3938543228. The cubic root of 8157773546 is about 2013.0622979580.

The spelling of 8157773546 in words is "eight billion, one hundred fifty-seven million, seven hundred seventy-three thousand, five hundred forty-six".