5121587138 has 16 divisors (see below), whose sum is σ = 7891911744. Its totient is φ = 2490983280.

The previous prime is 5121587129. The next prime is 5121587167. The reversal of 5121587138 is 8317851215.

It is a junction number, because it is equal to n+sod(n) for n = 5121587095 and 5121587104.

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, 582233 + ... + 590963.

It is an arithmetic number, because the mean of its divisors is an integer number (493244484).

Almost surely, 2^5121587138 is an apocalyptic number.

5121587138 is a deficient number, since it is larger than the sum of its proper divisors (2770324606).

5121587138 is a wasteful number, since it uses less digits than its factorization.

5121587138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16697.

The product of its digits is 67200, while the sum is 41.

The square root of 5121587138 is about 71565.2648845793. The cubic root of 5121587138 is about 1723.7258266038.

The spelling of 5121587138 in words is "five billion, one hundred twenty-one million, five hundred eighty-seven thousand, one hundred thirty-eight".