120781440041917 has 16 divisors (see below), whose sum is σ = 134625790575360. Its totient is φ = 107686703342592.

The previous prime is 120781440041891. The next prime is 120781440042007. The reversal of 120781440041917 is 719140044187021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120781440041917 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 (120781440048917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7085733 + ... + 17081290.

It is an arithmetic number, because the mean of its divisors is an integer number (8414111910960).

Almost surely, 2^{120781440041917} is an apocalyptic number.

120781440041917 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

120781440041917 is a deficient number, since it is larger than the sum of its proper divisors (13844350533443).

120781440041917 is a wasteful number, since it uses less digits than its factorization.

120781440041917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24182532.

The product of its (nonzero) digits is 451584, while the sum is 49.

The spelling of 120781440041917 in words is "one hundred twenty trillion, seven hundred eighty-one billion, four hundred forty million, forty-one thousand, nine hundred seventeen".