21507464211070 has 16 divisors (see below), whose sum is σ = 38715359782320. Its totient is φ = 8602558083904.

The previous prime is 21507464211061. The next prime is 21507464211091. The reversal of 21507464211070 is 7011246470512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53238775 + ... + 53641234.

It is an arithmetic number, because the mean of its divisors is an integer number (2419709986395).

Almost surely, 2^{21507464211070} is an apocalyptic number.

21507464211070 is a deficient number, since it is larger than the sum of its proper divisors (17207895571250).

21507464211070 is a wasteful number, since it uses less digits than its factorization.

21507464211070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106900139.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 21507464211070 in words is "twenty-one trillion, five hundred seven billion, four hundred sixty-four million, two hundred eleven thousand, seventy".