83513768348405 has 4 divisors (see below), whose sum is σ = 100216522018092. Its totient is φ = 66811014678720.

The previous prime is 83513768348321. The next prime is 83513768348407. The reversal of 83513768348405 is 50484386731538.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26557057449316 + 56956710899089 = 5153354^2 + 7546967^2 .

It is not a de Polignac number, because 83513768348405 - 2¹⁸ = 83513768086261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83513768348407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8351376834836 + ... + 8351376834845.

It is an arithmetic number, because the mean of its divisors is an integer number (25054130504523).

Almost surely, 2^{83513768348405} is an apocalyptic number.

It is an amenable number.

83513768348405 is a deficient number, since it is larger than the sum of its proper divisors (16702753669687).

83513768348405 is a wasteful number, since it uses less digits than its factorization.

83513768348405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16702753669686.

The product of its (nonzero) digits is 232243200, while the sum is 65.

The spelling of 83513768348405 in words is "eighty-three trillion, five hundred thirteen billion, seven hundred sixty-eight million, three hundred forty-eight thousand, four hundred five".