21476523006452 has 6 divisors (see below), whose sum is σ = 37583915261298. Its totient is φ = 10738261503224.

The previous prime is 21476523006401. The next prime is 21476523006457. The reversal of 21476523006452 is 25460032567412.

It can be written as a sum of positive squares in only one way, i.e., 19175343229156 + 2301179777296 = 4378966^2 + 1516964^2 .

It is a super-2 number, since 2×21476523006452² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21476523006397 and 21476523006406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21476523006457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2684565375803 + ... + 2684565375810.

It is an arithmetic number, because the mean of its divisors is an integer number (6263985876883).

Almost surely, 2^{21476523006452} is an apocalyptic number.

It is an amenable number.

21476523006452 is a deficient number, since it is larger than the sum of its proper divisors (16107392254846).

21476523006452 is a wasteful number, since it uses less digits than its factorization.

21476523006452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369130751617 (or 5369130751615 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 47.

The spelling of 21476523006452 in words is "twenty-one trillion, four hundred seventy-six billion, five hundred twenty-three million, six thousand, four hundred fifty-two".