156549428428 has 12 divisors (see below), whose sum is σ = 273974730120. Its totient is φ = 78270934112.

The previous prime is 156549428423. The next prime is 156549428429. The reversal of 156549428428 is 824824945651.

It is a super-2 number, since 2×156549428428² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (156549428423) 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, 850801 + ... + 1018312.

It is an arithmetic number, because the mean of its divisors is an integer number (22831227510).

Almost surely, 2^156549428428 is an apocalyptic number.

It is an amenable number.

156549428428 is a deficient number, since it is larger than the sum of its proper divisors (117425301692).

156549428428 is a wasteful number, since it uses less digits than its factorization.

156549428428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890056 (or 1890054 counting only the distinct ones).

The product of its digits is 22118400, while the sum is 58.

The spelling of 156549428428 in words is "one hundred fifty-six billion, five hundred forty-nine million, four hundred twenty-eight thousand, four hundred twenty-eight".