83475633657438 has 48 divisors (see below), whose sum is σ = 208912281033456. Its totient is φ = 23807667352320.

The previous prime is 83475633657433. The next prime is 83475633657461.

83475633657438 is a `hidden beast` number, since 8 + 3 + 4 + 7 + 563 + 3 + 6 + 57 + 4 + 3 + 8 = 666.

83475633657438 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83475633657433) 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, 12399823381 + ... + 12399830112.

It is an arithmetic number, because the mean of its divisors is an integer number (4352339188197).

Almost surely, 2^{83475633657438} is an apocalyptic number.

83475633657438 is an abundant number, since it is smaller than the sum of its proper divisors (125436647376018).

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

83475633657438 is a wasteful number, since it uses less digits than its factorization.

83475633657438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24799653529 (or 24799653526 counting only the distinct ones).

The product of its digits is 3657830400, while the sum is 72.

The spelling of 83475633657438 in words is "eighty-three trillion, four hundred seventy-five billion, six hundred thirty-three million, six hundred fifty-seven thousand, four hundred thirty-eight".