21470552232746 has 16 divisors (see below), whose sum is σ = 32437992660864. Its totient is φ = 10658028592224.

The previous prime is 21470552232743. The next prime is 21470552232761. The reversal of 21470552232746 is 64723225507412.

It is a super-2 number, since 2×21470552232746² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21470552232694 and 21470552232703.

It is not an unprimeable number, because it can be changed into a prime (21470552232743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34838930 + ... + 35449853.

It is an arithmetic number, because the mean of its divisors is an integer number (2027374541304).

Almost surely, 2^{21470552232746} is an apocalyptic number.

21470552232746 is a deficient number, since it is larger than the sum of its proper divisors (10967440428118).

21470552232746 is a wasteful number, since it uses less digits than its factorization.

21470552232746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70289885.

The product of its (nonzero) digits is 5644800, while the sum is 50.

The spelling of 21470552232746 in words is "twenty-one trillion, four hundred seventy billion, five hundred fifty-two million, two hundred thirty-two thousand, seven hundred forty-six".