84144974725250 has 16 divisors (see below), whose sum is σ = 157519392686136. Its totient is φ = 33657989890000.

The previous prime is 84144974725247. The next prime is 84144974725271. The reversal of 84144974725250 is 5252747944148.

It is a Cunningham number, because it is equal to 9173057²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 10425904992889 + 73719069732361 = 3228917^2 + 8585981^2 .

It is a super-2 number, since 2×84144974725250² (a number of 29 digits) contains 22 as substring.

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, 168289949201 + ... + 168289949700.

Almost surely, 2^{84144974725250} is an apocalyptic number.

84144974725250 is a deficient number, since it is larger than the sum of its proper divisors (73374417960886).

84144974725250 is a wasteful number, since it uses less digits than its factorization.

84144974725250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336579898918 (or 336579898908 counting only the distinct ones).

The product of its (nonzero) digits is 90316800, while the sum is 62.

The spelling of 84144974725250 in words is "eighty-four trillion, one hundred forty-four billion, nine hundred seventy-four million, seven hundred twenty-five thousand, two hundred fifty".