32117781438431 has 4 divisors (see below), whose sum is σ = 34588380010632. Its totient is φ = 29647182866232.

The previous prime is 32117781438401. The next prime is 32117781438461. The reversal of 32117781438431 is 13483418771123.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (32117781438401) and next prime (32117781438461).

It is a cyclic number.

It is not a de Polignac number, because 32117781438431 - 2³⁴ = 32100601569247 is a prime.

It is a super-2 number, since 2×32117781438431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32117781438401) 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, 1235299286081 + ... + 1235299286106.

It is an arithmetic number, because the mean of its divisors is an integer number (8647095002658).

Almost surely, 2^{32117781438431} is an apocalyptic number.

32117781438431 is a deficient number, since it is larger than the sum of its proper divisors (2470598572201).

32117781438431 is a wasteful number, since it uses less digits than its factorization.

32117781438431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470598572200.

The product of its digits is 2709504, while the sum is 53.

The spelling of 32117781438431 in words is "thirty-two trillion, one hundred seventeen billion, seven hundred eighty-one million, four hundred thirty-eight thousand, four hundred thirty-one".