156828085613 has 4 divisors (see below), whose sum is σ = 160164853440. Its totient is φ = 153491317788.

The previous prime is 156828085577. The next prime is 156828085643. The reversal of 156828085613 is 316580828651.

It is a happy number.

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 156828085613 - 2⁶ = 156828085549 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 (156828085643) 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, 1668383843 + ... + 1668383936.

It is an arithmetic number, because the mean of its divisors is an integer number (40041213360).

Almost surely, 2^156828085613 is an apocalyptic number.

It is an amenable number.

156828085613 is a deficient number, since it is larger than the sum of its proper divisors (3336767827).

156828085613 is an equidigital number, since it uses as much as digits as its factorization.

156828085613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336767826.

The product of its (nonzero) digits is 2764800, while the sum is 53.

The spelling of 156828085613 in words is "one hundred fifty-six billion, eight hundred twenty-eight million, eighty-five thousand, six hundred thirteen".