21134634634546 has 8 divisors (see below), whose sum is σ = 32724595563264. Its totient is φ = 10226436113460.

The previous prime is 21134634634543. The next prime is 21134634634571. The reversal of 21134634634546 is 64543643643112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21134634634546² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21134634634493 and 21134634634502.

It is not an unprimeable number, because it can be changed into a prime (21134634634543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170440601830 + ... + 170440601953.

It is an arithmetic number, because the mean of its divisors is an integer number (4090574445408).

Almost surely, 2^{21134634634546} is an apocalyptic number.

21134634634546 is a deficient number, since it is larger than the sum of its proper divisors (11589960928718).

21134634634546 is a wasteful number, since it uses less digits than its factorization.

21134634634546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340881203816.

The product of its digits is 14929920, while the sum is 52.

The spelling of 21134634634546 in words is "twenty-one trillion, one hundred thirty-four billion, six hundred thirty-four million, six hundred thirty-four thousand, five hundred forty-six".