155428331536 has 15 divisors (see below), whose sum is σ = 301145447773. Its totient is φ = 77713377280.

The previous prime is 155428331497. The next prime is 155428331551. The reversal of 155428331536 is 635133824551.

The square root of 155428331536 is 394244.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 56379653136 + 99048678400 = 237444^2 + 314720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1527696 + ... + 1626256.

Almost surely, 2^155428331536 is an apocalyptic number.

155428331536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

155428331536 is the 394244-th square number.

It is an amenable number.

155428331536 is a deficient number, since it is larger than the sum of its proper divisors (145717116237).

155428331536 is an frugal number, since it uses more digits than its factorization.

155428331536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197130 (or 98563 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 46.

The spelling of 155428331536 in words is "one hundred fifty-five billion, four hundred twenty-eight million, three hundred thirty-one thousand, five hundred thirty-six".