5165451643 has 12 divisors (see below), whose sum is σ = 5730805080. Its totient is φ = 4651966880.

The previous prime is 5165451607. The next prime is 5165451653. The reversal of 5165451643 is 3461545615.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-5165451643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5165451596 and 5165451605.

It is not an unprimeable number, because it can be changed into a prime (5165451653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186538 + ... + 212431.

It is an arithmetic number, because the mean of its divisors is an integer number (477567090).

Almost surely, 2^5165451643 is an apocalyptic number.

5165451643 is a deficient number, since it is larger than the sum of its proper divisors (565353437).

5165451643 is a wasteful number, since it uses less digits than its factorization.

5165451643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399098 (or 399087 counting only the distinct ones).

The product of its digits is 216000, while the sum is 40.

The square root of 5165451643 is about 71871.0765398710. The cubic root of 5165451643 is about 1728.6328694808.

The spelling of 5165451643 in words is "five billion, one hundred sixty-five million, four hundred fifty-one thousand, six hundred forty-three".