18503739220970 has 32 divisors (see below), whose sum is σ = 35085477170880. Its totient is φ = 7006791133440.

The previous prime is 18503739220931. The next prime is 18503739221029. The reversal of 18503739220970 is 7902293730581.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35519552 + ... + 36036731.

It is an arithmetic number, because the mean of its divisors is an integer number (1096421161590).

Almost surely, 2^{18503739220970} is an apocalyptic number.

18503739220970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18503739220970 is a deficient number, since it is larger than the sum of its proper divisors (16581737949910).

18503739220970 is a wasteful number, since it uses less digits than its factorization.

18503739220970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71557670.

The product of its (nonzero) digits is 5715360, while the sum is 56.

The spelling of 18503739220970 in words is "eighteen trillion, five hundred three billion, seven hundred thirty-nine million, two hundred twenty thousand, nine hundred seventy".