120809553530 has 16 divisors (see below), whose sum is σ = 217464151464. Its totient is φ = 48322275840.

The previous prime is 120809553523. The next prime is 120809553539. The reversal of 120809553530 is 35355908021.

It can be written as a sum of positive squares in 4 ways, for example, as 106512807769 + 14296745761 = 326363^2 + 119569^2 .

It is not an unprimeable number, because it can be changed into a prime (120809553539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167090 + ... + 519170.

Almost surely, 2^120809553530 is an apocalyptic number.

120809553530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120809553530 is a deficient number, since it is larger than the sum of its proper divisors (96654597934).

120809553530 is a wasteful number, since it uses less digits than its factorization.

120809553530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386401.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 120809553530 in words is "one hundred twenty billion, eight hundred nine million, five hundred fifty-three thousand, five hundred thirty".