83415128140505 has 32 divisors (see below), whose sum is σ = 116339676364800. Its totient is φ = 56228099159232.

The previous prime is 83415128140501. The next prime is 83415128140573. The reversal of 83415128140505 is 50504182151438.

It is not a de Polignac number, because 83415128140505 - 2² = 83415128140501 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83415128140505.

It is not an unprimeable number, because it can be changed into a prime (83415128140501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87991064 + ... + 88934006.

It is an arithmetic number, because the mean of its divisors is an integer number (3635614886400).

Almost surely, 2^{83415128140505} is an apocalyptic number.

It is an amenable number.

83415128140505 is a deficient number, since it is larger than the sum of its proper divisors (32924548224295).

83415128140505 is a wasteful number, since it uses less digits than its factorization.

83415128140505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985853.

The product of its (nonzero) digits is 768000, while the sum is 47.

The spelling of 83415128140505 in words is "eighty-three trillion, four hundred fifteen billion, one hundred twenty-eight million, one hundred forty thousand, five hundred five".