78252131098211 has 8 divisors (see below), whose sum is σ = 91612251042144. Its totient is φ = 65437322172480.

The previous prime is 78252131098147. The next prime is 78252131098223. The reversal of 78252131098211 is 11289013125287.

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 78252131098211 - 2⁶ = 78252131098147 is a prime.

It is a super-2 number, since 2×78252131098211² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78252131098211.

It is not an unprimeable number, because it can be changed into a prime (78252131098231) 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, 136327754240 + ... + 136327754813.

It is an arithmetic number, because the mean of its divisors is an integer number (11451531380268).

Almost surely, 2^{78252131098211} is an apocalyptic number.

78252131098211 is a deficient number, since it is larger than the sum of its proper divisors (13360119943933).

78252131098211 is a wasteful number, since it uses less digits than its factorization.

78252131098211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272655509101.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 78252131098211 in words is "seventy-eight trillion, two hundred fifty-two billion, one hundred thirty-one million, ninety-eight thousand, two hundred eleven".