21612634626711 has 8 divisors (see below), whose sum is σ = 28816924696560. Its totient is φ = 14408383820672.

The previous prime is 21612634626643. The next prime is 21612634626719. The reversal of 21612634626711 is 11762643621612.

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

It is a cyclic number.

It is not a de Polignac number, because 21612634626711 - 2²⁶ = 21612567517847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21612634626719) 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, 8506626 + ... + 10751183.

It is an arithmetic number, because the mean of its divisors is an integer number (3602115587070).

Almost surely, 2^{21612634626711} is an apocalyptic number.

21612634626711 is a deficient number, since it is larger than the sum of its proper divisors (7204290069849).

21612634626711 is a wasteful number, since it uses less digits than its factorization.

21612634626711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19631905.

The product of its digits is 870912, while the sum is 48.

The spelling of 21612634626711 in words is "twenty-one trillion, six hundred twelve billion, six hundred thirty-four million, six hundred twenty-six thousand, seven hundred eleven".