7613421539 has 4 divisors (see below), whose sum is σ = 7757071056. Its totient is φ = 7469772024.

The previous prime is 7613421503. The next prime is 7613421547. The reversal of 7613421539 is 9351243167.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7613421539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7613421496 and 7613421505.

It is not an unprimeable number, because it can be changed into a prime (7613421139) 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, 71824679 + ... + 71824784.

It is an arithmetic number, because the mean of its divisors is an integer number (1939267764).

Almost surely, 2^7613421539 is an apocalyptic number.

7613421539 is a deficient number, since it is larger than the sum of its proper divisors (143649517).

7613421539 is a wasteful number, since it uses less digits than its factorization.

7613421539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143649516.

The product of its digits is 136080, while the sum is 41.

The square root of 7613421539 is about 87254.9227207268. The cubic root of 7613421539 is about 1967.2518337642.

The spelling of 7613421539 in words is "seven billion, six hundred thirteen million, four hundred twenty-one thousand, five hundred thirty-nine".