84078901252 has 6 divisors (see below), whose sum is σ = 147138077198. Its totient is φ = 42039450624.

The previous prime is 84078901243. The next prime is 84078901273. The reversal of 84078901252 is 25210987048.

It can be written as a sum of positive squares in only one way, i.e., 83719950336 + 358950916 = 289344^2 + 18946^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10509862653 + ... + 10509862660.

Almost surely, 2^84078901252 is an apocalyptic number.

It is an amenable number.

84078901252 is a deficient number, since it is larger than the sum of its proper divisors (63059175946).

84078901252 is a wasteful number, since it uses less digits than its factorization.

84078901252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21019725317 (or 21019725315 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 46.

The spelling of 84078901252 in words is "eighty-four billion, seventy-eight million, nine hundred one thousand, two hundred fifty-two".