155324212000 has 48 divisors (see below), whose sum is σ = 381631598712. Its totient is φ = 62129683200.

The previous prime is 155324211929. The next prime is 155324212003. The reversal of 155324212000 is 212423551.

It can be written as a sum of positive squares in 4 ways, for example, as 43332250896 + 111991961104 = 208164^2 + 334652^2 .

It is a super-2 number, since 2×155324212000² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (155324212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19411527 + ... + 19419526.

Almost surely, 2^155324212000 is an apocalyptic number.

155324212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155324212000 is an abundant number, since it is smaller than the sum of its proper divisors (226307386712).

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

155324212000 is an equidigital number, since it uses as much as digits as its factorization.

155324212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38831078 (or 38831060 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 155324212000 its reverse (212423551), we get a palindrome (155536635551).

The spelling of 155324212000 in words is "one hundred fifty-five billion, three hundred twenty-four million, two hundred twelve thousand".