21146556237334 has 32 divisors (see below), whose sum is σ = 34958112710400. Its totient is φ = 9513620796000.

The previous prime is 21146556237329. The next prime is 21146556237341. The reversal of 21146556237334 is 43373265564112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4811317 + ... + 8089615.

It is an arithmetic number, because the mean of its divisors is an integer number (1092441022200).

Almost surely, 2^{21146556237334} is an apocalyptic number.

21146556237334 is a deficient number, since it is larger than the sum of its proper divisors (13811556473066).

21146556237334 is a wasteful number, since it uses less digits than its factorization.

21146556237334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281316.

The product of its digits is 10886400, while the sum is 52.

The spelling of 21146556237334 in words is "twenty-one trillion, one hundred forty-six billion, five hundred fifty-six million, two hundred thirty-seven thousand, three hundred thirty-four".