120025730321551 has 12 divisors (see below), whose sum is σ = 123035949043776. Its totient is φ = 117087460244480.

The previous prime is 120025730321509. The next prime is 120025730321599. The reversal of 120025730321551 is 155123037520021.

It is not a de Polignac number, because 120025730321551 - 2¹¹ = 120025730319503 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120025730321551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120025730325551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14942511 + ... + 21525103.

It is an arithmetic number, because the mean of its divisors is an integer number (10252995753648).

Almost surely, 2^{120025730321551} is an apocalyptic number.

120025730321551 is a deficient number, since it is larger than the sum of its proper divisors (3010218722225).

120025730321551 is an equidigital number, since it uses as much as digits as its factorization.

120025730321551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6593522 (or 6593481 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

Adding to 120025730321551 its reverse (155123037520021), we get a palindrome (275148767841572).

The spelling of 120025730321551 in words is "one hundred twenty trillion, twenty-five billion, seven hundred thirty million, three hundred twenty-one thousand, five hundred fifty-one".