120955679987 has 2 divisors, whose sum is σ = 120955679988. Its totient is φ = 120955679986.

The previous prime is 120955679959. The next prime is 120955680023. The reversal of 120955679987 is 789976559021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120955679987 - 2¹⁴ = 120955663603 is a prime.

It is a super-2 number, since 2×120955679987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120955679917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60477839993 + 60477839994.

It is an arithmetic number, because the mean of its divisors is an integer number (60477839994).

Almost surely, 2^120955679987 is an apocalyptic number.

120955679987 is a deficient number, since it is larger than the sum of its proper divisors (1).

120955679987 is an equidigital number, since it uses as much as digits as its factorization.

120955679987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 85730400, while the sum is 68.

The spelling of 120955679987 in words is "one hundred twenty billion, nine hundred fifty-five million, six hundred seventy-nine thousand, nine hundred eighty-seven".