120178917643 has 4 divisors (see below), whose sum is σ = 120703716640. Its totient is φ = 119654118648.

The previous prime is 120178917619. The next prime is 120178917653. The reversal of 120178917643 is 346719871021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120178917643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120178917653) 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, 262399155 + ... + 262399612.

It is an arithmetic number, because the mean of its divisors is an integer number (30175929160).

Almost surely, 2^120178917643 is an apocalyptic number.

120178917643 is a deficient number, since it is larger than the sum of its proper divisors (524798997).

120178917643 is an equidigital number, since it uses as much as digits as its factorization.

120178917643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524798996.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 120178917643 in words is "one hundred twenty billion, one hundred seventy-eight million, nine hundred seventeen thousand, six hundred forty-three".