83220877569 has 4 divisors (see below), whose sum is σ = 110961170096. Its totient is φ = 55480585044.

The previous prime is 83220877517. The next prime is 83220877583. The reversal of 83220877569 is 96577802238.

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 not a de Polignac number, because 83220877569 - 2¹² = 83220873473 is a prime.

It is a super-2 number, since 2×83220877569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83220877169) 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, 13870146259 + ... + 13870146264.

It is an arithmetic number, because the mean of its divisors is an integer number (27740292524).

Almost surely, 2^83220877569 is an apocalyptic number.

It is an amenable number.

83220877569 is a deficient number, since it is larger than the sum of its proper divisors (27740292527).

83220877569 is a wasteful number, since it uses less digits than its factorization.

83220877569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27740292526.

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 83220877569 in words is "eighty-three billion, two hundred twenty million, eight hundred seventy-seven thousand, five hundred sixty-nine".