144117021387 has 4 divisors (see below), whose sum is σ = 192156028520. Its totient is φ = 96078014256.

The previous prime is 144117021383. The next prime is 144117021397. The reversal of 144117021387 is 783120711441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783120711441 = 3 ⋅261040237147.

It is not a de Polignac number, because 144117021387 - 2² = 144117021383 is a prime.

It is a super-2 number, since 2×144117021387² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144117021383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24019503562 + ... + 24019503567.

It is an arithmetic number, because the mean of its divisors is an integer number (48039007130).

Almost surely, 2^144117021387 is an apocalyptic number.

144117021387 is a deficient number, since it is larger than the sum of its proper divisors (48039007133).

144117021387 is an equidigital number, since it uses as much as digits as its factorization.

144117021387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48039007132.

The product of its (nonzero) digits is 37632, while the sum is 39.

The spelling of 144117021387 in words is "one hundred forty-four billion, one hundred seventeen million, twenty-one thousand, three hundred eighty-seven".