120575021655 has 32 divisors (see below), whose sum is σ = 210569476608. Its totient is φ = 58429712000.

The previous prime is 120575021599. The next prime is 120575021683. The reversal of 120575021655 is 556120575021.

It is not a de Polignac number, because 120575021655 - 2¹² = 120575017559 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121462 + ... + 505868.

It is an arithmetic number, because the mean of its divisors is an integer number (6580296144).

Almost surely, 2^120575021655 is an apocalyptic number.

120575021655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120575021655 is a deficient number, since it is larger than the sum of its proper divisors (89994454953).

120575021655 is a wasteful number, since it uses less digits than its factorization.

120575021655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386327.

The product of its (nonzero) digits is 105000, while the sum is 39.

Adding to 120575021655 its reverse (556120575021), we get a palindrome (676695596676).

The spelling of 120575021655 in words is "one hundred twenty billion, five hundred seventy-five million, twenty-one thousand, six hundred fifty-five".