83361438540 has 72 divisors (see below), whose sum is σ = 252893506320. Its totient is φ = 22227037824.

The previous prime is 83361438539. The next prime is 83361438547. The reversal of 83361438540 is 4583416338.

83361438540 is a `hidden beast` number, since 8 + 3 + 3 + 61 + 43 + 8 + 540 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (83361438547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1802182 + ... + 1847858.

It is an arithmetic number, because the mean of its divisors is an integer number (3512409810).

Almost surely, 2^83361438540 is an apocalyptic number.

It is an amenable number.

83361438540 is an abundant number, since it is smaller than the sum of its proper divisors (169532067780).

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

83361438540 is a wasteful number, since it uses less digits than its factorization.

83361438540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55831 (or 55826 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 83361438540 in words is "eighty-three billion, three hundred sixty-one million, four hundred thirty-eight thousand, five hundred forty".