145120440023398 has 32 divisors (see below), whose sum is σ = 248941041735744. Its totient is φ = 62153696328192.

The previous prime is 145120440023357. The next prime is 145120440023467. The reversal of 145120440023398 is 893320044021541.

It is a super-2 number, since 2×145120440023398² (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 15 ways as a sum of consecutive naturals, for example, 216011386 + ... + 216682162.

It is an arithmetic number, because the mean of its divisors is an integer number (7779407554242).

Almost surely, 2^{145120440023398} is an apocalyptic number.

145120440023398 is a deficient number, since it is larger than the sum of its proper divisors (103820601712346).

145120440023398 is a wasteful number, since it uses less digits than its factorization.

145120440023398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680896.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 145120440023398 in words is "one hundred forty-five trillion, one hundred twenty billion, four hundred forty million, twenty-three thousand, three hundred ninety-eight".