17970725620 has 12 divisors (see below), whose sum is σ = 37738523844. Its totient is φ = 7188290240.

The previous prime is 17970725587. The next prime is 17970725623. The reversal of 17970725620 is 2652707971.

It can be written as a sum of positive squares in 2 ways, for example, as 11264425956 + 6706299664 = 106134^2 + 81892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17970725623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449268121 + ... + 449268160.

It is an arithmetic number, because the mean of its divisors is an integer number (3144876987).

Almost surely, 2^17970725620 is an apocalyptic number.

17970725620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17970725620 is an abundant number, since it is smaller than the sum of its proper divisors (19767798224).

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

17970725620 is a wasteful number, since it uses less digits than its factorization.

17970725620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898536290 (or 898536288 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 46.

It can be divided in two parts, 17970 and 725620, that added together give a triangular number (743590 = T₁₂₁₉).

The spelling of 17970725620 in words is "seventeen billion, nine hundred seventy million, seven hundred twenty-five thousand, six hundred twenty".