120155861709 has 48 divisors (see below), whose sum is σ = 193013277184. Its totient is φ = 71529091200.

The previous prime is 120155861681. The next prime is 120155861731. The reversal of 120155861709 is 907168551021.

120155861709 is a `hidden beast` number, since 1 + 20 + 1 + 5 + 5 + 8 + 617 + 0 + 9 = 666.

It is not a de Polignac number, because 120155861709 - 2¹¹ = 120155859661 is a prime.

It is a super-2 number, since 2×120155861709² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120155861209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12947379 + ... + 12956655.

Almost surely, 2^120155861709 is an apocalyptic number.

It is an amenable number.

120155861709 is a deficient number, since it is larger than the sum of its proper divisors (72857415475).

120155861709 is a wasteful number, since it uses less digits than its factorization.

120155861709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12898 (or 12895 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 45.

The spelling of 120155861709 in words is "one hundred twenty billion, one hundred fifty-five million, eight hundred sixty-one thousand, seven hundred nine".