102578261452 has 18 divisors (see below), whose sum is σ = 183694176204. Its totient is φ = 50094308880.

The previous prime is 102578261393. The next prime is 102578261483. The reversal of 102578261452 is 254162875201.

102578261452 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 102578261399 and 102578261408.

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 5 ways as a sum of consecutive naturals, for example, 4188202 + ... + 4212622.

Almost surely, 2^102578261452 is an apocalyptic number.

It is an amenable number.

102578261452 is a deficient number, since it is larger than the sum of its proper divisors (81115914752).

102578261452 is an frugal number, since it uses more digits than its factorization.

102578261452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48889 (or 24466 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

Multiplying 102578261452 by its sum of digits (43), we get a square (4410865242436 = 2100206²).

102578261452 divided by its sum of digits (43) gives a square (2385540964 = 48842²).

The spelling of 102578261452 in words is "one hundred two billion, five hundred seventy-eight million, two hundred sixty-one thousand, four hundred fifty-two".