83375777850509 has 4 divisors (see below), whose sum is σ = 83379944367840. Its totient is φ = 83371611333180.

The previous prime is 83375777850403. The next prime is 83375777850527. The reversal of 83375777850509 is 90505877757338.

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 83375777850509 - 2¹⁶ = 83375777784973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83375777855509) 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, 2083228649 + ... + 2083268670.

It is an arithmetic number, because the mean of its divisors is an integer number (20844986091960).

Almost surely, 2^{83375777850509} is an apocalyptic number.

It is an amenable number.

83375777850509 is a deficient number, since it is larger than the sum of its proper divisors (4166517331).

83375777850509 is a wasteful number, since it uses less digits than its factorization.

83375777850509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166517330.

The product of its (nonzero) digits is 1555848000, while the sum is 74.

The spelling of 83375777850509 in words is "eighty-three trillion, three hundred seventy-five billion, seven hundred seventy-seven million, eight hundred fifty thousand, five hundred nine".