156814668047 has 4 divisors (see below), whose sum is σ = 157178507616. Its totient is φ = 156450828480.

The previous prime is 156814668037. The next prime is 156814668083. The reversal of 156814668047 is 740866418651.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 156814668047 - 2²⁰ = 156813619471 is a prime.

It is a super-2 number, since 2×156814668047² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156814667983 and 156814668001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156814668007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181919138 + ... + 181919999.

It is an arithmetic number, because the mean of its divisors is an integer number (39294626904).

Almost surely, 2^156814668047 is an apocalyptic number.

156814668047 is a deficient number, since it is larger than the sum of its proper divisors (363839569).

156814668047 is an equidigital number, since it uses as much as digits as its factorization.

156814668047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363839568.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 156814668047 in words is "one hundred fifty-six billion, eight hundred fourteen million, six hundred sixty-eight thousand, forty-seven".