5020991951 has 4 divisors (see below), whose sum is σ = 5021367600. Its totient is φ = 5020616304.

The previous prime is 5020991929. The next prime is 5020992071. The reversal of 5020991951 is 1591990205.

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

It is a cyclic number.

It is not a de Polignac number, because 5020991951 - 2⁶ = 5020991887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5020991899 and 5020991908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5020991051) 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, 167006 + ... + 194763.

It is an arithmetic number, because the mean of its divisors is an integer number (1255341900).

Almost surely, 2^5020991951 is an apocalyptic number.

5020991951 is a deficient number, since it is larger than the sum of its proper divisors (375649).

5020991951 is a wasteful number, since it uses less digits than its factorization.

5020991951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375648.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 5020991951 is about 70858.9581563263. The cubic root of 5020991951 is about 1712.3656542343.

The spelling of 5020991951 in words is "five billion, twenty million, nine hundred ninety-one thousand, nine hundred fifty-one".