428064622418 has 4 divisors (see below), whose sum is σ = 642096933630. Its totient is φ = 214032311208.

The previous prime is 428064622393. The next prime is 428064622423. The reversal of 428064622418 is 814226460824.

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., 403038331609 + 25026290809 = 634853^2 + 158197^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107016155603 + ... + 107016155606.

Almost surely, 2^428064622418 is an apocalyptic number.

428064622418 is a deficient number, since it is larger than the sum of its proper divisors (214032311212).

428064622418 is a wasteful number, since it uses less digits than its factorization.

428064622418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214032311211.

The product of its (nonzero) digits is 1179648, while the sum is 47.

The spelling of 428064622418 in words is "four hundred twenty-eight billion, sixty-four million, six hundred twenty-two thousand, four hundred eighteen".