21261603614102 has 4 divisors (see below), whose sum is σ = 31892405421156. Its totient is φ = 10630801807050.

The previous prime is 21261603614101. The next prime is 21261603614137. The reversal of 21261603614102 is 20141630616212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21261603614101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5315400903524 + ... + 5315400903527.

It is an arithmetic number, because the mean of its divisors is an integer number (7973101355289).

Almost surely, 2^{21261603614102} is an apocalyptic number.

21261603614102 is a deficient number, since it is larger than the sum of its proper divisors (10630801807054).

21261603614102 is a wasteful number, since it uses less digits than its factorization.

21261603614102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10630801807053.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 21261603614102 in words is "twenty-one trillion, two hundred sixty-one billion, six hundred three million, six hundred fourteen thousand, one hundred two".