155216344633650 has 384 divisors, whose sum is σ = 453580388997120. Its totient is φ = 38960901504000.

The previous prime is 155216344633607. The next prime is 155216344633673. The reversal of 155216344633650 is 56336443612551.

155216344633650 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 163 + 446 + 3 + 36 + 5 + 0 = 666.

It is a super-2 number, since 2×155216344633650² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5507822560 + ... + 5507850740.

It is an arithmetic number, because the mean of its divisors is an integer number (1181198929680).

Almost surely, 2^{155216344633650} is an apocalyptic number.

155216344633650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155216344633650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226790194498560).

155216344633650 is an abundant number, since it is smaller than the sum of its proper divisors (298364044363470).

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

155216344633650 is a wasteful number, since it uses less digits than its factorization.

155216344633650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31827 (or 31816 counting only the distinct ones).

The product of its (nonzero) digits is 23328000, while the sum is 54.

The spelling of 155216344633650 in words is "one hundred fifty-five trillion, two hundred sixteen billion, three hundred forty-four million, six hundred thirty-three thousand, six hundred fifty".