16145556240 has 80 divisors (see below), whose sum is σ = 54601344576. Its totient is φ = 3914073600.

The previous prime is 16145556239. The next prime is 16145556269. The reversal of 16145556240 is 4265554161.

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, 3055231 + ... + 3060510.

Almost surely, 2^16145556240 is an apocalyptic number.

16145556240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16145556240 is an abundant number, since it is smaller than the sum of its proper divisors (38455788336).

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

16145556240 is a wasteful number, since it uses less digits than its factorization.

16145556240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115768 (or 6115762 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 16145556240 in words is "sixteen billion, one hundred forty-five million, five hundred fifty-six thousand, two hundred forty".