21601673755210 has 32 divisors (see below), whose sum is σ = 39072726604800. Its totient is φ = 8598611372160.

The previous prime is 21601673755201. The next prime is 21601673755213. The reversal of 21601673755210 is 1255737610612.

It is not an unprimeable number, because it can be changed into a prime (21601673755213) 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, 4561371 + ... + 8000590.

It is an arithmetic number, because the mean of its divisors is an integer number (1221022706400).

Almost surely, 2^{21601673755210} is an apocalyptic number.

21601673755210 is a deficient number, since it is larger than the sum of its proper divisors (17471052849590).

21601673755210 is a wasteful number, since it uses less digits than its factorization.

21601673755210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12562806.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 21601673755210 in words is "twenty-one trillion, six hundred one billion, six hundred seventy-three million, seven hundred fifty-five thousand, two hundred ten".