5166561602 has 4 divisors (see below), whose sum is σ = 7749842406. Its totient is φ = 2583280800.

The previous prime is 5166561601. The next prime is 5166561607. The reversal of 5166561602 is 2061656615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2061656615 = 5 ⋅412331323.

It can be written as a sum of positive squares in only one way, i.e., 2814408601 + 2352153001 = 53051^2 + 48499^2 .

It is not an unprimeable number, because it can be changed into a prime (5166561601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1291640399 + ... + 1291640402.

Almost surely, 2^5166561602 is an apocalyptic number.

5166561602 is a deficient number, since it is larger than the sum of its proper divisors (2583280804).

5166561602 is a wasteful number, since it uses less digits than its factorization.

5166561602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583280803.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 5166561602 is about 71878.7980005231. The cubic root of 5166561602 is about 1728.7566775766.

The spelling of 5166561602 in words is "five billion, one hundred sixty-six million, five hundred sixty-one thousand, six hundred two".