151221520450 has 192 divisors, whose sum is σ = 378605767680. Its totient is φ = 43398432000.

The previous prime is 151221520409. The next prime is 151221520451. The reversal of 151221520450 is 54025122151.

It is not an unprimeable number, because it can be changed into a prime (151221520451) 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 95 ways as a sum of consecutive naturals, for example, 20967345 + ... + 20974555.

It is an arithmetic number, because the mean of its divisors is an integer number (1971905040).

Almost surely, 2^151221520450 is an apocalyptic number.

151221520450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

151221520450 is an abundant number, since it is smaller than the sum of its proper divisors (227384247230).

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

151221520450 is a wasteful number, since it uses less digits than its factorization.

151221520450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7673 (or 7668 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The spelling of 151221520450 in words is "one hundred fifty-one billion, two hundred twenty-one million, five hundred twenty thousand, four hundred fifty".