145720419912 has 24 divisors (see below), whose sum is σ = 394659470790. Its totient is φ = 48573473280.

The previous prime is 145720419907. The next prime is 145720419931. The reversal of 145720419912 is 219914027541.

145720419912 is a `hidden beast` number, since 1 + 457 + 2 + 0 + 4 + 199 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 96779476836 + 48940943076 = 311094^2 + 221226^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1011947289 + ... + 1011947432.

Almost surely, 2^145720419912 is an apocalyptic number.

145720419912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145720419912 is an abundant number, since it is smaller than the sum of its proper divisors (248939050878).

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

145720419912 is a wasteful number, since it uses less digits than its factorization.

145720419912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2023894733 (or 2023894726 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The spelling of 145720419912 in words is "one hundred forty-five billion, seven hundred twenty million, four hundred nineteen thousand, nine hundred twelve".