32503752138 has 64 divisors (see below), whose sum is σ = 76449889152. Its totient is φ = 9082740480.

The previous prime is 32503752103. The next prime is 32503752173. The reversal of 32503752138 is 83125730523.

It is an interprime number because it is at equal distance from previous prime (32503752103) and next prime (32503752173).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 32503752096 and 32503752105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850456 + ... + 887852.

It is an arithmetic number, because the mean of its divisors is an integer number (1194529518).

Almost surely, 2^32503752138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32503752138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38224944576).

32503752138 is an abundant number, since it is smaller than the sum of its proper divisors (43946137014).

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

32503752138 is a wasteful number, since it uses less digits than its factorization.

32503752138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38439.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 32503752138 in words is "thirty-two billion, five hundred three million, seven hundred fifty-two thousand, one hundred thirty-eight".