83415128140440 has 96 divisors (see below), whose sum is σ = 271371082535280. Its totient is φ = 22221723108096.

The previous prime is 83415128140433. The next prime is 83415128140441. The reversal of 83415128140440 is 4404182151438.

83415128140440 is a `hidden beast` number, since 8 + 3 + 41 + 5 + 1 + 28 + 140 + 440 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83415128140441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115844034 + ... + 116561873.

Almost surely, 2^{83415128140440} is an apocalyptic number.

It is an amenable number.

83415128140440 is an abundant number, since it is smaller than the sum of its proper divisors (187955954394840).

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

83415128140440 is a wasteful number, since it uses less digits than its factorization.

83415128140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232406921 (or 232406914 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 83415128140440 in words is "eighty-three trillion, four hundred fifteen billion, one hundred twenty-eight million, one hundred forty thousand, four hundred forty".