120945641685 has 16 divisors (see below), whose sum is σ = 211105120320. Its totient is φ = 58640311040.

The previous prime is 120945641681. The next prime is 120945641717. The reversal of 120945641685 is 586146549021.

It is not a de Polignac number, because 120945641685 - 2² = 120945641681 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120945641681) 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, 366501780 + ... + 366502109.

It is an arithmetic number, because the mean of its divisors is an integer number (13194070020).

Almost surely, 2^120945641685 is an apocalyptic number.

120945641685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

120945641685 is a deficient number, since it is larger than the sum of its proper divisors (90159478635).

120945641685 is a wasteful number, since it uses less digits than its factorization.

120945641685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733003908.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 120945641685 in words is "one hundred twenty billion, nine hundred forty-five million, six hundred forty-one thousand, six hundred eighty-five".