83373449643 has 48 divisors (see below), whose sum is σ = 140558146560. Its totient is φ = 47085105600.

The previous prime is 83373449633. The next prime is 83373449683. The reversal of 83373449643 is 34694437338.

83373449643 is a `hidden beast` number, since 83 + 3 + 7 + 34 + 496 + 43 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-83373449643 is a prime.

It is a super-2 number, since 2×83373449643² (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 83373449643.

It is not an unprimeable number, because it can be changed into a prime (83373449623) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248571 + ... + 478052.

It is an arithmetic number, because the mean of its divisors is an integer number (2928294720).

Almost surely, 2^83373449643 is an apocalyptic number.

83373449643 is a deficient number, since it is larger than the sum of its proper divisors (57184696917).

83373449643 is a wasteful number, since it uses less digits than its factorization.

83373449643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726720 (or 726717 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 54.

The spelling of 83373449643 in words is "eighty-three billion, three hundred seventy-three million, four hundred forty-nine thousand, six hundred forty-three".