83661949112 has 32 divisors (see below), whose sum is σ = 185058693120. Its totient is φ = 34698503520.

The previous prime is 83661949109. The next prime is 83661949117. The reversal of 83661949112 is 21194916638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83661949117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24094448 + ... + 24097919.

It is an arithmetic number, because the mean of its divisors is an integer number (5783084160).

Almost surely, 2^83661949112 is an apocalyptic number.

It is an amenable number.

83661949112 is an abundant number, since it is smaller than the sum of its proper divisors (101396744008).

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

83661949112 is a wasteful number, since it uses less digits than its factorization.

83661949112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48192411 (or 48192407 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The spelling of 83661949112 in words is "eighty-three billion, six hundred sixty-one million, nine hundred forty-nine thousand, one hundred twelve".