83191661910 has 48 divisors (see below), whose sum is σ = 247198082976. Its totient is φ = 19015236864.

The previous prime is 83191661893. The next prime is 83191661923. The reversal of 83191661910 is 1916619138.

83191661910 is a `hidden beast` number, since 8 + 3 + 1 + 9 + 16 + 619 + 10 = 666.

It is a super-2 number, since 2×83191661910² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66024499 + ... + 66025758.

It is an arithmetic number, because the mean of its divisors is an integer number (5149960062).

Almost surely, 2^83191661910 is an apocalyptic number.

83191661910 is an abundant number, since it is smaller than the sum of its proper divisors (164006421066).

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

83191661910 is a wasteful number, since it uses less digits than its factorization.

83191661910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132050277 (or 132050274 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The spelling of 83191661910 in words is "eighty-three billion, one hundred ninety-one million, six hundred sixty-one thousand, nine hundred ten".