428040137604 has 12 divisors (see below), whose sum is σ = 998760321104. Its totient is φ = 142680045864.

The previous prime is 428040137597. The next prime is 428040137647. The reversal of 428040137604 is 406731040824.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17835005722 + ... + 17835005745.

Almost surely, 2^428040137604 is an apocalyptic number.

It is an amenable number.

428040137604 is an abundant number, since it is smaller than the sum of its proper divisors (570720183500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428040137604 is a wasteful number, since it uses less digits than its factorization.

428040137604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35670011474 (or 35670011472 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 428040137604 in words is "four hundred twenty-eight billion, forty million, one hundred thirty-seven thousand, six hundred four".