145458722172 has 12 divisors (see below), whose sum is σ = 339403685096. Its totient is φ = 48486240720.

The previous prime is 145458722111. The next prime is 145458722173. The reversal of 145458722172 is 271227854541.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×145458722172² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145458722173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6060780079 + ... + 6060780102.

Almost surely, 2^145458722172 is an apocalyptic number.

145458722172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145458722172 is an abundant number, since it is smaller than the sum of its proper divisors (193944962924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145458722172 is a wasteful number, since it uses less digits than its factorization.

145458722172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12121560188 (or 12121560186 counting only the distinct ones).

The product of its digits is 1254400, while the sum is 48.

The spelling of 145458722172 in words is "one hundred forty-five billion, four hundred fifty-eight million, seven hundred twenty-two thousand, one hundred seventy-two".