38540215632 has 20 divisors (see below), whose sum is σ = 99562223840. Its totient is φ = 12846738528.

The previous prime is 38540215631. The next prime is 38540215639. The reversal of 38540215632 is 23651204583.

It is a happy number.

It is a super-2 number, since 2×38540215632² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38540215631) 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, 401460532 + ... + 401460627.

It is an arithmetic number, because the mean of its divisors is an integer number (4978111192).

Almost surely, 2^38540215632 is an apocalyptic number.

It is an amenable number.

38540215632 is an abundant number, since it is smaller than the sum of its proper divisors (61022008208).

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

38540215632 is a wasteful number, since it uses less digits than its factorization.

38540215632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802921170 (or 802921164 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 38540215632 in words is "thirty-eight billion, five hundred forty million, two hundred fifteen thousand, six hundred thirty-two".