156420566456 has 128 divisors (see below), whose sum is σ = 375244531200. Its totient is φ = 59353620480.

The previous prime is 156420566453. The next prime is 156420566459. The reversal of 156420566456 is 654665024651.

156420566456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (156420566453) and next prime (156420566459).

It is a super-2 number, since 2×156420566456² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156420566453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9341900 + ... + 9358628.

It is an arithmetic number, because the mean of its divisors is an integer number (2931597900).

Almost surely, 2^156420566456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156420566456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187622265600).

156420566456 is an abundant number, since it is smaller than the sum of its proper divisors (218823964744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156420566456 is a wasteful number, since it uses less digits than its factorization.

156420566456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17149 (or 17145 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 156420566456 in words is "one hundred fifty-six billion, four hundred twenty million, five hundred sixty-six thousand, four hundred fifty-six".