20470639551018 has 32 divisors (see below), whose sum is σ = 42721595375616. Its totient is φ = 6526830758448.

The previous prime is 20470639550969. The next prime is 20470639551067. The reversal of 20470639551018 is 81015593607402.

It is an interprime number because it is at equal distance from previous prime (20470639550969) and next prime (20470639551067).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29317071 + ... + 30007197.

It is an arithmetic number, because the mean of its divisors is an integer number (1335049855488).

It is a 1-persistent number, because it is pandigital, but 2⋅20470639551018 = 40941279102036 is not.

Almost surely, 2^{20470639551018} is an apocalyptic number.

20470639551018 is an abundant number, since it is smaller than the sum of its proper divisors (22250955824598).

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

20470639551018 is a wasteful number, since it uses less digits than its factorization.

20470639551018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905098.

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 20470639551018 in words is "twenty trillion, four hundred seventy billion, six hundred thirty-nine million, five hundred fifty-one thousand, eighteen".