83819155644 has 48 divisors (see below), whose sum is σ = 248353056000. Its totient is φ = 23948329968.

The previous prime is 83819155631. The next prime is 83819155669. The reversal of 83819155644 is 44655191838.

It is a happy number.

83819155644 is a `hidden beast` number, since 8 + 3 + 81 + 9 + 1 + 556 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 55435194 + ... + 55436705.

It is an arithmetic number, because the mean of its divisors is an integer number (5174022000).

Almost surely, 2^83819155644 is an apocalyptic number.

83819155644 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

83819155644 is an abundant number, since it is smaller than the sum of its proper divisors (164533900356).

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

83819155644 is a wasteful number, since it uses less digits than its factorization.

83819155644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110871919 (or 110871911 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 83819155644 in words is "eighty-three billion, eight hundred nineteen million, one hundred fifty-five thousand, six hundred forty-four".