3917915139043 has 4 divisors (see below), whose sum is σ = 3947822888328. Its totient is φ = 3888007389760.

The previous prime is 3917915138999. The next prime is 3917915139091. The reversal of 3917915139043 is 3409315197193.

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

It is a cyclic number.

It is not a de Polignac number, because 3917915139043 - 2¹³ = 3917915130851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3917915199043) 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, 14953874446 + ... + 14953874707.

It is an arithmetic number, because the mean of its divisors is an integer number (986955722082).

Almost surely, 2^{3917915139043} is an apocalyptic number.

3917915139043 is a deficient number, since it is larger than the sum of its proper divisors (29907749285).

3917915139043 is a wasteful number, since it uses less digits than its factorization.

3917915139043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29907749284.

The product of its (nonzero) digits is 2755620, while the sum is 55.

The spelling of 3917915139043 in words is "three trillion, nine hundred seventeen billion, nine hundred fifteen million, one hundred thirty-nine thousand, forty-three".