78177070402852 has 12 divisors (see below), whose sum is σ = 136825312819356. Its totient is φ = 39084123883040.

The previous prime is 78177070402841. The next prime is 78177070402913. The reversal of 78177070402852 is 25820407077187.

It can be written as a sum of positive squares in 2 ways, for example, as 41561307601636 + 36615762801216 = 6446806^2 + 6051096^2 .

It is a super-3 number, since 3×78177070402852³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 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 in 3 ways as a sum of consecutive naturals, for example, 1102789723 + ... + 1102860610.

It is an arithmetic number, because the mean of its divisors is an integer number (11402109401613).

Almost surely, 2^{78177070402852} is an apocalyptic number.

It is an amenable number.

78177070402852 is a deficient number, since it is larger than the sum of its proper divisors (58648242416504).

78177070402852 is a wasteful number, since it uses less digits than its factorization.

78177070402852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205659198 (or 2205659196 counting only the distinct ones).

The product of its (nonzero) digits is 12293120, while the sum is 58.

The spelling of 78177070402852 in words is "seventy-eight trillion, one hundred seventy-seven billion, seventy million, four hundred two thousand, eight hundred fifty-two".