20420105348 has 6 divisors (see below), whose sum is σ = 35735184366. Its totient is φ = 10210052672.

The previous prime is 20420105333. The next prime is 20420105351. The reversal of 20420105348 is 84350102402.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18087022144 + 2333083204 = 134488^2 + 48302^2 .

It is a super-2 number, since 2×20420105348² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20420105348.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2552513165 + ... + 2552513172.

It is an arithmetic number, because the mean of its divisors is an integer number (5955864061).

Almost surely, 2^20420105348 is an apocalyptic number.

It is an amenable number.

20420105348 is a deficient number, since it is larger than the sum of its proper divisors (15315079018).

20420105348 is a wasteful number, since it uses less digits than its factorization.

20420105348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5105026341 (or 5105026339 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The spelling of 20420105348 in words is "twenty billion, four hundred twenty million, one hundred five thousand, three hundred forty-eight".