87210111101278 has 16 divisors (see below), whose sum is σ = 143222643905904. Its totient is φ = 39497851431360.

The previous prime is 87210111101263. The next prime is 87210111101299.

87210111101278 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87210111101278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7155401775 + ... + 7155413962.

It is an arithmetic number, because the mean of its divisors is an integer number (8951415244119).

Almost surely, 2^{87210111101278} is an apocalyptic number.

87210111101278 is a deficient number, since it is larger than the sum of its proper divisors (56012532804626).

87210111101278 is a wasteful number, since it uses less digits than its factorization.

87210111101278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14310816027.

The product of its (nonzero) digits is 12544, while the sum is 40.

It can be divided in two parts, 8721011 and 1101278, that added together give a palindrome (9822289).

The spelling of 87210111101278 in words is "eighty-seven trillion, two hundred ten billion, one hundred eleven million, one hundred one thousand, two hundred seventy-eight".