83078661858853 has 8 divisors (see below), whose sum is σ = 83815339771800. Its totient is φ = 82342009709568.

The previous prime is 83078661858823. The next prime is 83078661858859. The reversal of 83078661858853 is 35885816687038.

It can be written as a sum of positive squares in 4 ways, for example, as 861336198724 + 82217325660129 = 928082^2 + 9067377^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83078661858853 - 2¹³ = 83078661850661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83078661858853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83078661858859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65983 + ... + 12890371.

It is an arithmetic number, because the mean of its divisors is an integer number (10476917471475).

Almost surely, 2^{83078661858853} is an apocalyptic number.

It is an amenable number.

83078661858853 is a deficient number, since it is larger than the sum of its proper divisors (736677912947).

83078661858853 is a wasteful number, since it uses less digits than its factorization.

83078661858853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12881831.

The product of its (nonzero) digits is 1857945600, while the sum is 76.

The spelling of 83078661858853 in words is "eighty-three trillion, seventy-eight billion, six hundred sixty-one million, eight hundred fifty-eight thousand, eight hundred fifty-three".