40172997833 has 4 divisors (see below), whose sum is σ = 42287366160.
Its totient is φ = 38058629508.
The previous prime is 40172997829. The next prime is 40172997883. The reversal of 40172997833 is 33879927104.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 40172997833 - 22 = 40172997829 is a prime.
It is a super-2 number, since 2×401729978332 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (40172997803) 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, 1057184135 + ... + 1057184172.
It is an arithmetic number, because the mean of its divisors is an integer number (10571841540).
Almost surely, 240172997833 is an apocalyptic number.
It is an amenable number.
40172997833 is a deficient number, since it is larger than the sum of its proper divisors (2114368327).
40172997833 is a wasteful number, since it uses less digits than its factorization.
40172997833 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2114368326.
The product of its (nonzero) digits is 2286144, while the sum is 53.
The spelling of 40172997833 in words is "forty billion, one hundred seventy-two million, nine hundred ninety-seven thousand, eight hundred thirty-three".