102378418826 has 4 divisors (see below), whose sum is σ = 153567628242. Its totient is φ = 51189209412.

The previous prime is 102378418801. The next prime is 102378418847. The reversal of 102378418826 is 628814873201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 628814873201 = 37 ⋅16994996573.

It can be written as a sum of positive squares in only one way, i.e., 78089508025 + 24288910801 = 279445^2 + 155849^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25594604705 + ... + 25594604708.

Almost surely, 2^102378418826 is an apocalyptic number.

102378418826 is a deficient number, since it is larger than the sum of its proper divisors (51189209416).

102378418826 is an equidigital number, since it uses as much as digits as its factorization.

102378418826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51189209415.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The spelling of 102378418826 in words is "one hundred two billion, three hundred seventy-eight million, four hundred eighteen thousand, eight hundred twenty-six".