102578401357 has 4 divisors (see below), whose sum is σ = 104260014556. Its totient is φ = 100896788160.

The previous prime is 102578401309. The next prime is 102578401379. The reversal of 102578401357 is 753104875201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56137720356 + 46440681001 = 236934^2 + 215501^2 .

It is a cyclic number.

It is not a de Polignac number, because 102578401357 - 2³¹ = 100430917709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102578401157) by changing a digit.

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, 840806508 + ... + 840806629.

It is an arithmetic number, because the mean of its divisors is an integer number (26065003639).

Almost surely, 2^102578401357 is an apocalyptic number.

It is an amenable number.

102578401357 is a deficient number, since it is larger than the sum of its proper divisors (1681613199).

102578401357 is an equidigital number, since it uses as much as digits as its factorization.

102578401357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681613198.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 102578401357 in words is "one hundred two billion, five hundred seventy-eight million, four hundred one thousand, three hundred fifty-seven".