21612634627070 has 32 divisors (see below), whose sum is σ = 39270042943488. Its totient is φ = 8563643228448.

The previous prime is 21612634627043. The next prime is 21612634627079. The reversal of 21612634627070 is 7072643621612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21612634627079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12416534 + ... + 14049753.

It is an arithmetic number, because the mean of its divisors is an integer number (1227188841984).

Almost surely, 2^{21612634627070} is an apocalyptic number.

21612634627070 is a deficient number, since it is larger than the sum of its proper divisors (17657408316418).

21612634627070 is a wasteful number, since it uses less digits than its factorization.

21612634627070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26467064.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 21612634627070 in words is "twenty-one trillion, six hundred twelve billion, six hundred thirty-four million, six hundred twenty-seven thousand, seventy".