38523440683640 has 192 divisors, whose sum is σ = 98162121214080. Its totient is φ = 13589129523200.

The previous prime is 38523440683627. The next prime is 38523440683691. The reversal of 38523440683640 is 4638604432583.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24955910 + ... + 26454570.

It is an arithmetic number, because the mean of its divisors is an integer number (511261047990).

Almost surely, 2^{38523440683640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38523440683640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49081060607040).

38523440683640 is an abundant number, since it is smaller than the sum of its proper divisors (59638680530440).

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

38523440683640 is a wasteful number, since it uses less digits than its factorization.

38523440683640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498854 (or 1498839 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 56.

The spelling of 38523440683640 in words is "thirty-eight trillion, five hundred twenty-three billion, four hundred forty million, six hundred eighty-three thousand, six hundred forty".