21364357470152 has 32 divisors (see below), whose sum is σ = 40242582003000. Its totient is φ = 10633105695744.

The previous prime is 21364357470133. The next prime is 21364357470163. The reversal of 21364357470152 is 25107475346312.

It can be written as a sum of positive squares in 4 ways, for example, as 8688664103716 + 12675693366436 = 2947654^2 + 3560294^2 .

It is a super-2 number, since 2×21364357470152² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21364357470152.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4811027 + ... + 8116322.

Almost surely, 2^{21364357470152} is an apocalyptic number.

It is an amenable number.

21364357470152 is a deficient number, since it is larger than the sum of its proper divisors (18878224532848).

21364357470152 is a wasteful number, since it uses less digits than its factorization.

21364357470152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928305 (or 12928301 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 50.

The spelling of 21364357470152 in words is "twenty-one trillion, three hundred sixty-four billion, three hundred fifty-seven million, four hundred seventy thousand, one hundred fifty-two".