145928731920 has 80 divisors (see below), whose sum is σ = 462899545152. Its totient is φ = 38009341440.

The previous prime is 145928731909. The next prime is 145928731937. The reversal of 145928731920 is 29137829541.

It is a tau number, because it is divible by the number of its divisors (80).

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, 7059871 + ... + 7080510.

Almost surely, 2^145928731920 is an apocalyptic number.

145928731920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145928731920 is an abundant number, since it is smaller than the sum of its proper divisors (316970813232).

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

145928731920 is a wasteful number, since it uses less digits than its factorization.

145928731920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14140440 (or 14140434 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 145928731920 in words is "one hundred forty-five billion, nine hundred twenty-eight million, seven hundred thirty-one thousand, nine hundred twenty".