40187120117 has 4 divisors (see below), whose sum is σ = 40695817920. Its totient is φ = 39678422316.

The previous prime is 40187120021. The next prime is 40187120143. The reversal of 40187120117 is 71102178104.

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 40187120117 - 2¹⁸ = 40186857973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40187120147) 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, 254348783 + ... + 254348940.

It is an arithmetic number, because the mean of its divisors is an integer number (10173954480).

Almost surely, 2^40187120117 is an apocalyptic number.

It is an amenable number.

40187120117 is a deficient number, since it is larger than the sum of its proper divisors (508697803).

40187120117 is an equidigital number, since it uses as much as digits as its factorization.

40187120117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508697802.

The product of its (nonzero) digits is 3136, while the sum is 32.

The spelling of 40187120117 in words is "forty billion, one hundred eighty-seven million, one hundred twenty thousand, one hundred seventeen".