20460386516 has 24 divisors (see below), whose sum is σ = 37957729320. Its totient is φ = 9616776192.

The previous prime is 20460386489. The next prime is 20460386521. The reversal of 20460386516 is 61568306402.

It can be written as a sum of positive squares in 4 ways, for example, as 1951872400 + 18508514116 = 44180^2 + 136046^2 .

It is a super-2 number, since 2×20460386516² (a number of 21 digits) contains 22 as substring.

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, 125105 + ... + 237848.

It is an arithmetic number, because the mean of its divisors is an integer number (1581572055).

Almost surely, 2^20460386516 is an apocalyptic number.

It is an amenable number.

20460386516 is a deficient number, since it is larger than the sum of its proper divisors (17497342804).

20460386516 is a wasteful number, since it uses less digits than its factorization.

20460386516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363803 (or 363801 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 20460386516 in words is "twenty billion, four hundred sixty million, three hundred eighty-six thousand, five hundred sixteen".