28343602501 has 4 divisors (see below), whose sum is σ = 28422554400. Its totient is φ = 28264650604.

The previous prime is 28343602459. The next prime is 28343602517. The reversal of 28343602501 is 10520634382.

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 a de Polignac number, because none of the positive numbers 2^k-28343602501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343602561) 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, 39475411 + ... + 39476128.

It is an arithmetic number, because the mean of its divisors is an integer number (7105638600).

Almost surely, 2^28343602501 is an apocalyptic number.

It is an amenable number.

28343602501 is a deficient number, since it is larger than the sum of its proper divisors (78951899).

28343602501 is an equidigital number, since it uses as much as digits as its factorization.

28343602501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78951898.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 28343602501 in words is "twenty-eight billion, three hundred forty-three million, six hundred two thousand, five hundred one".