145731278355840 has 192 divisors, whose sum is σ = 521866407076560. Its totient is φ = 38861674186752.

The previous prime is 145731278355799. The next prime is 145731278355869. The reversal of 145731278355840 is 48553872137541.

145731278355840 is a `hidden beast` number, since 1 + 4 + 5 + 7 + 3 + 1 + 2 + 78 + 3 + 558 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468373539 + ... + 468684578.

Almost surely, 2^{145731278355840} is an apocalyptic number.

145731278355840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145731278355840 is an abundant number, since it is smaller than the sum of its proper divisors (376135128720720).

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

145731278355840 is an frugal number, since it uses more digits than its factorization.

145731278355840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937058151 (or 937058127 counting only the distinct ones).

The product of its (nonzero) digits is 112896000, while the sum is 63.

The spelling of 145731278355840 in words is "one hundred forty-five trillion, seven hundred thirty-one billion, two hundred seventy-eight million, three hundred fifty-five thousand, eight hundred forty".