5311639042 has 4 divisors (see below), whose sum is σ = 7967458566. Its totient is φ = 2655819520.

The previous prime is 5311638991. The next prime is 5311639051. The reversal of 5311639042 is 2409361135.

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

It can be written as a sum of positive squares in only one way, i.e., 2950553761 + 2361085281 = 54319^2 + 48591^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5311638989 and 5311639007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1327909759 + ... + 1327909762.

Almost surely, 2^5311639042 is an apocalyptic number.

5311639042 is a deficient number, since it is larger than the sum of its proper divisors (2655819524).

5311639042 is a wasteful number, since it uses less digits than its factorization.

5311639042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655819523.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 5311639042 is about 72880.9923231016. The cubic root of 5311639042 is about 1744.7887464943.

The spelling of 5311639042 in words is "five billion, three hundred eleven million, six hundred thirty-nine thousand, forty-two".