145120440023445 has 64 divisors (see below), whose sum is σ = 233260322270976. Its totient is φ = 77042739271680.

The previous prime is 145120440023357. The next prime is 145120440023467. The reversal of 145120440023445 is 544320044021541.

It is not a de Polignac number, because 145120440023445 - 2³⁶ = 145051720546709 is a prime.

It is a super-2 number, since 2×145120440023445² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4904856942 + ... + 4904886528.

It is an arithmetic number, because the mean of its divisors is an integer number (3644692535484).

Almost surely, 2^{145120440023445} is an apocalyptic number.

145120440023445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145120440023445 is a deficient number, since it is larger than the sum of its proper divisors (88139882247531).

145120440023445 is a wasteful number, since it uses less digits than its factorization.

145120440023445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31750.

The product of its (nonzero) digits is 307200, while the sum is 39.

Adding to 145120440023445 its reverse (544320044021541), we get a palindrome (689440484044986).

The spelling of 145120440023445 in words is "one hundred forty-five trillion, one hundred twenty billion, four hundred forty million, twenty-three thousand, four hundred forty-five".