40001375232 has 528 divisors, whose sum is σ = 146723719680. Its totient is φ = 10541187072.

The previous prime is 40001375149. The next prime is 40001375251. The reversal of 40001375232 is 23257310004.

40001375232 is a `hidden beast` number, since 4 + 0 + 0 + 0 + 137 + 523 + 2 = 666.

It is a super-2 number, since 2×40001375232² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 40001375196 and 40001375205.

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, 32706973 + ... + 32708195.

Almost surely, 2^40001375232 is an apocalyptic number.

40001375232 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40001375232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73361859840).

40001375232 is an abundant number, since it is smaller than the sum of its proper divisors (106722344448).

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

40001375232 is a wasteful number, since it uses less digits than its factorization.

40001375232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

Adding to 40001375232 its reverse (23257310004), we get a palindrome (63258685236).

The spelling of 40001375232 in words is "forty billion, one million, three hundred seventy-five thousand, two hundred thirty-two".