42728051613 has 16 divisors (see below), whose sum is σ = 61419193920. Its totient is φ = 26265859584.

The previous prime is 42728051543. The next prime is 42728051633. The reversal of 42728051613 is 31615082724.

It is not a de Polignac number, because 42728051613 - 2⁸ = 42728051357 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42728051633) 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, 553431 + ... + 625892.

It is an arithmetic number, because the mean of its divisors is an integer number (3838699620).

Almost surely, 2^42728051613 is an apocalyptic number.

It is an amenable number.

42728051613 is a deficient number, since it is larger than the sum of its proper divisors (18691142307).

42728051613 is a wasteful number, since it uses less digits than its factorization.

42728051613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180268.

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 42728051613 in words is "forty-two billion, seven hundred twenty-eight million, fifty-one thousand, six hundred thirteen".