820141753638 has 32 divisors (see below), whose sum is σ = 1641380944896. Its totient is φ = 273197752128.

The previous prime is 820141753621. The next prime is 820141753667. The reversal of 820141753638 is 836357141028.

It is a congruent number.

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, 70738770 + ... + 70750362.

It is an arithmetic number, because the mean of its divisors is an integer number (51293154528).

Almost surely, 2^820141753638 is an apocalyptic number.

820141753638 is an abundant number, since it is smaller than the sum of its proper divisors (821239191258).

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

820141753638 is a wasteful number, since it uses less digits than its factorization.

820141753638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18468.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 820141753638 in words is "eight hundred twenty billion, one hundred forty-one million, seven hundred fifty-three thousand, six hundred thirty-eight".