145354146221361 has 32 divisors (see below), whose sum is σ = 241646797145088. Its totient is φ = 75502670667840.

The previous prime is 145354146221359. The next prime is 145354146221377. The reversal of 145354146221361 is 163122641453541.

It is not a de Polignac number, because 145354146221361 - 2¹ = 145354146221359 is a prime.

It is a super-2 number, since 2×145354146221361² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145354146221361.

It is not an unprimeable number, because it can be changed into a prime (145354146221461) 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, 21977535 + ... + 27815828.

It is an arithmetic number, because the mean of its divisors is an integer number (7551462410784).

Almost surely, 2^{145354146221361} is an apocalyptic number.

145354146221361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145354146221361 is a deficient number, since it is larger than the sum of its proper divisors (96292650923727).

145354146221361 is a wasteful number, since it uses less digits than its factorization.

145354146221361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49806021.

The product of its digits is 2073600, while the sum is 48.

The spelling of 145354146221361 in words is "one hundred forty-five trillion, three hundred fifty-four billion, one hundred forty-six million, two hundred twenty-one thousand, three hundred sixty-one".