75516049861 has 4 divisors (see below), whose sum is σ = 86304056992. Its totient is φ = 64728042732.

The previous prime is 75516049859. The next prime is 75516049883. The reversal of 75516049861 is 16894061557.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 75516049861 - 2¹ = 75516049859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75516049799 and 75516049808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75516049801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5394003555 + ... + 5394003568.

It is an arithmetic number, because the mean of its divisors is an integer number (21576014248).

Almost surely, 2^75516049861 is an apocalyptic number.

It is an amenable number.

75516049861 is a deficient number, since it is larger than the sum of its proper divisors (10788007131).

75516049861 is a wasteful number, since it uses less digits than its factorization.

75516049861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10788007130.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 75516049861 in words is "seventy-five billion, five hundred sixteen million, forty-nine thousand, eight hundred sixty-one".