21437631171330 has 128 divisors (see below), whose sum is σ = 57612385244160. Its totient is φ = 5061169347840.

The previous prime is 21437631171329. The next prime is 21437631171353. The reversal of 21437631171330 is 3317113673412.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3061849 + ... + 7228428.

It is an arithmetic number, because the mean of its divisors is an integer number (450096759720).

Almost surely, 2^{21437631171330} is an apocalyptic number.

21437631171330 is an abundant number, since it is smaller than the sum of its proper divisors (36174754072830).

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

21437631171330 is a wasteful number, since it uses less digits than its factorization.

21437631171330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10290464.

The product of its (nonzero) digits is 190512, while the sum is 42.

The spelling of 21437631171330 in words is "twenty-one trillion, four hundred thirty-seven billion, six hundred thirty-one million, one hundred seventy-one thousand, three hundred thirty".