428513844642 has 16 divisors (see below), whose sum is σ = 922952896320. Its totient is φ = 131850413712.

The previous prime is 428513844637. The next prime is 428513844643. The reversal of 428513844642 is 246448315824.

It is a super-2 number, since 2×428513844642² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428513844643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2746883542 + ... + 2746883697.

It is an arithmetic number, because the mean of its divisors is an integer number (57684556020).

Almost surely, 2^428513844642 is an apocalyptic number.

428513844642 is an abundant number, since it is smaller than the sum of its proper divisors (494439051678).

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

428513844642 is a wasteful number, since it uses less digits than its factorization.

428513844642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5493767257.

The product of its digits is 5898240, while the sum is 51.

The spelling of 428513844642 in words is "four hundred twenty-eight billion, five hundred thirteen million, eight hundred forty-four thousand, six hundred forty-two".