145138652992 has 56 divisors (see below), whose sum is σ = 299124737792. Its totient is φ = 69797376000.

The previous prime is 145138652977. The next prime is 145138652999. The reversal of 145138652992 is 299256831541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145138652999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98992 + ... + 547792.

Almost surely, 2^145138652992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145138652992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149562368896).

145138652992 is an abundant number, since it is smaller than the sum of its proper divisors (153986084800).

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

145138652992 is a wasteful number, since it uses less digits than its factorization.

145138652992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449007 (or 448997 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 55.

The spelling of 145138652992 in words is "one hundred forty-five billion, one hundred thirty-eight million, six hundred fifty-two thousand, nine hundred ninety-two".