42728628957 has 16 divisors (see below), whose sum is σ = 65116285440. Its totient is φ = 24414111792.

The previous prime is 42728628923. The next prime is 42728628979. The reversal of 42728628957 is 75982682724.

It is not a de Polignac number, because 42728628957 - 2⁶ = 42728628893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42728628957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42728628907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155298 + ... + 331020.

It is an arithmetic number, because the mean of its divisors is an integer number (4069767840).

Almost surely, 2^42728628957 is an apocalyptic number.

It is an amenable number.

42728628957 is a deficient number, since it is larger than the sum of its proper divisors (22387656483).

42728628957 is a wasteful number, since it uses less digits than its factorization.

42728628957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187312.

The product of its digits is 27095040, while the sum is 60.

The spelling of 42728628957 in words is "forty-two billion, seven hundred twenty-eight million, six hundred twenty-eight thousand, nine hundred fifty-seven".