438081761652 has 48 divisors (see below), whose sum is σ = 1037681789760. Its totient is φ = 143815237632.

The previous prime is 438081761651. The next prime is 438081761657. The reversal of 438081761652 is 256167180834.

It is a junction number, because it is equal to n+sod(n) for n = 438081761595 and 438081761604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438081761651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3636724 + ... + 3755252.

It is an arithmetic number, because the mean of its divisors is an integer number (21618370620).

Almost surely, 2^438081761652 is an apocalyptic number.

It is an amenable number.

438081761652 is an abundant number, since it is smaller than the sum of its proper divisors (599600028108).

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

438081761652 is a wasteful number, since it uses less digits than its factorization.

438081761652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123200 (or 123198 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 438081761652 in words is "four hundred thirty-eight billion, eighty-one million, seven hundred sixty-one thousand, six hundred fifty-two".