21170456702 has 4 divisors (see below), whose sum is σ = 31755685056. Its totient is φ = 10585228350.

The previous prime is 21170456653. The next prime is 21170456717. The reversal of 21170456702 is 20765407112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5292614174 + ... + 5292614177.

It is an arithmetic number, because the mean of its divisors is an integer number (7938921264).

Almost surely, 2^21170456702 is an apocalyptic number.

21170456702 is a deficient number, since it is larger than the sum of its proper divisors (10585228354).

21170456702 is a wasteful number, since it uses less digits than its factorization.

21170456702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585228353.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 21170456702 in words is "twenty-one billion, one hundred seventy million, four hundred fifty-six thousand, seven hundred two".