21374403403372 has 6 divisors (see below), whose sum is σ = 37405205955908. Its totient is φ = 10687201701684.

The previous prime is 21374403403343. The next prime is 21374403403417. The reversal of 21374403403372 is 27330430447312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2671800425418 + ... + 2671800425425.

Almost surely, 2^{21374403403372} is an apocalyptic number.

It is an amenable number.

21374403403372 is a deficient number, since it is larger than the sum of its proper divisors (16030802552536).

21374403403372 is a wasteful number, since it uses less digits than its factorization.

21374403403372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343600850847 (or 5343600850845 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 43.

The spelling of 21374403403372 in words is "twenty-one trillion, three hundred seventy-four billion, four hundred three million, four hundred three thousand, three hundred seventy-two".