999145542000 has 80 divisors (see below), whose sum is σ = 3221245246752. Its totient is φ = 266438809600.

The previous prime is 999145541981. The next prime is 999145542023. The reversal of 999145542000 is 245541999.

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

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 83256129 + ... + 83268128.

Almost surely, 2^999145542000 is an apocalyptic number.

It is an amenable number.

999145542000 is an abundant number, since it is smaller than the sum of its proper divisors (2222099704752).

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

999145542000 is a wasteful number, since it uses less digits than its factorization.

999145542000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166524283 (or 166524267 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 48.

The spelling of 999145542000 in words is "nine hundred ninety-nine billion, one hundred forty-five million, five hundred forty-two thousand".