78850050008621 has 4 divisors (see below), whose sum is σ = 78850081437600. Its totient is φ = 78850018579644.

The previous prime is 78850050008599. The next prime is 78850050008629. The reversal of 78850050008621 is 12680005005887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78850050008621 - 2²² = 78850045814317 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 78850050008621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78850050008629) 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, 11590481 + ... + 17089158.

It is an arithmetic number, because the mean of its divisors is an integer number (19712520359400).

Almost surely, 2^{78850050008621} is an apocalyptic number.

It is an amenable number.

78850050008621 is a deficient number, since it is larger than the sum of its proper divisors (31428979).

78850050008621 is a wasteful number, since it uses less digits than its factorization.

78850050008621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31428978.

The product of its (nonzero) digits is 1075200, while the sum is 50.

The spelling of 78850050008621 in words is "seventy-eight trillion, eight hundred fifty billion, fifty million, eight thousand, six hundred twenty-one".