21470071356452 has 12 divisors (see below), whose sum is σ = 39206217259776. Its totient is φ = 10268294996520.

The previous prime is 21470071356427. The next prime is 21470071356479. The reversal of 21470071356452 is 25465317007412.

It is a super-2 number, since 2×21470071356452² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21470071356397 and 21470071356406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116685170324 + ... + 116685170507.

It is an arithmetic number, because the mean of its divisors is an integer number (3267184771648).

Almost surely, 2^{21470071356452} is an apocalyptic number.

It is an amenable number.

21470071356452 is a deficient number, since it is larger than the sum of its proper divisors (17736145903324).

21470071356452 is a wasteful number, since it uses less digits than its factorization.

21470071356452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233370340858 (or 233370340856 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 21470071356452 in words is "twenty-one trillion, four hundred seventy billion, seventy-one million, three hundred fifty-six thousand, four hundred fifty-two".