78852870213877 has 4 divisors (see below), whose sum is σ = 78853022896896. Its totient is φ = 78852717530860.

The previous prime is 78852870213779. The next prime is 78852870213983. The reversal of 78852870213877 is 77831207825887.

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 78852870213877 - 2⁴³ = 70056777191669 is a prime.

It is a super-2 number, since 2×78852870213877² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78852874213877) 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, 75564199 + ... + 76600612.

It is an arithmetic number, because the mean of its divisors is an integer number (19713255724224).

Almost surely, 2^{78852870213877} is an apocalyptic number.

It is an amenable number.

78852870213877 is a deficient number, since it is larger than the sum of its proper divisors (152683019).

78852870213877 is a wasteful number, since it uses less digits than its factorization.

78852870213877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152683018.

The product of its (nonzero) digits is 590069760, while the sum is 73.

The spelling of 78852870213877 in words is "seventy-eight trillion, eight hundred fifty-two billion, eight hundred seventy million, two hundred thirteen thousand, eight hundred seventy-seven".