428070437997 has 4 divisors (see below), whose sum is σ = 570760584000. Its totient is φ = 285380291996.

The previous prime is 428070437959. The next prime is 428070438041. The reversal of 428070437997 is 799734070824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 428070437997 - 2⁷ = 428070437869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428070437997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428070437947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71345072997 + ... + 71345073002.

It is an arithmetic number, because the mean of its divisors is an integer number (142690146000).

Almost surely, 2^428070437997 is an apocalyptic number.

It is an amenable number.

428070437997 is a deficient number, since it is larger than the sum of its proper divisors (142690146003).

428070437997 is a wasteful number, since it uses less digits than its factorization.

428070437997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142690146002.

The product of its (nonzero) digits is 21337344, while the sum is 60.

The spelling of 428070437997 in words is "four hundred twenty-eight billion, seventy million, four hundred thirty-seven thousand, nine hundred ninety-seven".