428616952378 has 4 divisors (see below), whose sum is σ = 642925428570. Its totient is φ = 214308476188.

The previous prime is 428616952363. The next prime is 428616952381. The reversal of 428616952378 is 873259616824.

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

It can be written as a sum of positive squares in only one way, i.e., 288559129329 + 140057823049 = 537177^2 + 374243^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107154238093 + ... + 107154238096.

Almost surely, 2^428616952378 is an apocalyptic number.

428616952378 is a deficient number, since it is larger than the sum of its proper divisors (214308476192).

428616952378 is a wasteful number, since it uses less digits than its factorization.

428616952378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214308476191.

The product of its digits is 34836480, while the sum is 61.

The spelling of 428616952378 in words is "four hundred twenty-eight billion, six hundred sixteen million, nine hundred fifty-two thousand, three hundred seventy-eight".