83328890642 has 4 divisors (see below), whose sum is σ = 124993335966. Its totient is φ = 41664445320.

The previous prime is 83328890641. The next prime is 83328890651. The reversal of 83328890642 is 24609882338.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24609882338 = 2 ⋅12304941169.

It can be written as a sum of positive squares in only one way, i.e., 72715976281 + 10612914361 = 269659^2 + 103019^2 .

It is not an unprimeable number, because it can be changed into a prime (83328890641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20832222659 + ... + 20832222662.

Almost surely, 2^83328890642 is an apocalyptic number.

83328890642 is a deficient number, since it is larger than the sum of its proper divisors (41664445324).

83328890642 is a wasteful number, since it uses less digits than its factorization.

83328890642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41664445323.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The spelling of 83328890642 in words is "eighty-three billion, three hundred twenty-eight million, eight hundred ninety thousand, six hundred forty-two".