120400663145 has 32 divisors (see below), whose sum is σ = 171398142720. Its totient is φ = 79441286400.

The previous prime is 120400663127. The next prime is 120400663147. The reversal of 120400663145 is 541366004021.

It is not a de Polignac number, because 120400663145 - 2¹⁶ = 120400597609 is a prime.

It is a super-2 number, since 2×120400663145² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120400663147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94970 + ... + 499820.

It is an arithmetic number, because the mean of its divisors is an integer number (5356191960).

Almost surely, 2^120400663145 is an apocalyptic number.

It is an amenable number.

120400663145 is a deficient number, since it is larger than the sum of its proper divisors (50997479575).

120400663145 is a wasteful number, since it uses less digits than its factorization.

120400663145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405185.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 120400663145 its reverse (541366004021), we get a palindrome (661766667166).

The spelling of 120400663145 in words is "one hundred twenty billion, four hundred million, six hundred sixty-three thousand, one hundred forty-five".