83355123812 has 6 divisors (see below), whose sum is σ = 145871466678. Its totient is φ = 41677561904.

The previous prime is 83355123811. The next prime is 83355123833. The reversal of 83355123812 is 21832155338.

It can be written as a sum of positive squares in only one way, i.e., 64854771556 + 18500352256 = 254666^2 + 136016^2 .

It is a super-2 number, since 2×83355123812² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 83355123812.

It is not an unprimeable number, because it can be changed into a prime (83355123811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10419390473 + ... + 10419390480.

It is an arithmetic number, because the mean of its divisors is an integer number (24311911113).

Almost surely, 2^83355123812 is an apocalyptic number.

It is an amenable number.

83355123812 is a deficient number, since it is larger than the sum of its proper divisors (62516342866).

83355123812 is a wasteful number, since it uses less digits than its factorization.

83355123812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20838780957 (or 20838780955 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The spelling of 83355123812 in words is "eighty-three billion, three hundred fifty-five million, one hundred twenty-three thousand, eight hundred twelve".