87238722783278 has 16 divisors (see below), whose sum is σ = 142837222152240. Its totient is φ = 39630923649600.

The previous prime is 87238722783221. The next prime is 87238722783281.

87238722783278 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×87238722783278² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1152023873 + ... + 1152099596.

It is an arithmetic number, because the mean of its divisors is an integer number (8927326384515).

Almost surely, 2^{87238722783278} is an apocalyptic number.

87238722783278 is a deficient number, since it is larger than the sum of its proper divisors (55598499368962).

87238722783278 is a wasteful number, since it uses less digits than its factorization.

87238722783278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304125203.

The product of its digits is 1416167424, while the sum is 74.

The spelling of 87238722783278 in words is "eighty-seven trillion, two hundred thirty-eight billion, seven hundred twenty-two million, seven hundred eighty-three thousand, two hundred seventy-eight".