20602397910 has 64 divisors (see below), whose sum is σ = 51016573440. Its totient is φ = 5321368320.

The previous prime is 20602397909. The next prime is 20602397941. The reversal of 20602397910 is 1979320602.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110719 + ... + 231221.

It is an arithmetic number, because the mean of its divisors is an integer number (797133960).

Almost surely, 2^20602397910 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20602397910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25508286720).

20602397910 is an abundant number, since it is smaller than the sum of its proper divisors (30414175530).

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

20602397910 is a wasteful number, since it uses less digits than its factorization.

20602397910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120693.

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 20602397910 in words is "twenty billion, six hundred two million, three hundred ninety-seven thousand, nine hundred ten".