20919146710 has 48 divisors (see below), whose sum is σ = 47301494688. Its totient is φ = 6520250880.

The previous prime is 20919146707. The next prime is 20919146741. The reversal of 20919146710 is 1764191902.

It is a super-2 number, since 2×20919146710² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1226427 + ... + 1243366.

It is an arithmetic number, because the mean of its divisors is an integer number (985447806).

Almost surely, 2^20919146710 is an apocalyptic number.

20919146710 is an abundant number, since it is smaller than the sum of its proper divisors (26382347978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20919146710 is a wasteful number, since it uses less digits than its factorization.

20919146710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469829 (or 2469818 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 20919146710 in words is "twenty billion, nine hundred nineteen million, one hundred forty-six thousand, seven hundred ten".