83143950820 has 48 divisors (see below), whose sum is σ = 199661874048. Its totient is φ = 28489870080.

The previous prime is 83143950779. The next prime is 83143950893. The reversal of 83143950820 is 2805934138.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68880 + ... + 413560.

It is an arithmetic number, because the mean of its divisors is an integer number (4159622376).

Almost surely, 2^83143950820 is an apocalyptic number.

It is an amenable number.

83143950820 is an abundant number, since it is smaller than the sum of its proper divisors (116517923228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83143950820 is a wasteful number, since it uses less digits than its factorization.

83143950820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346420 (or 346418 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 83143950820 in words is "eighty-three billion, one hundred forty-three million, nine hundred fifty thousand, eight hundred twenty".