145981727507 has 16 divisors (see below), whose sum is σ = 182084550912. Its totient is φ = 113701146720.

The previous prime is 145981727503. The next prime is 145981727509. The reversal of 145981727507 is 705727189541.

It is not a de Polignac number, because 145981727507 - 2² = 145981727503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145981727503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249908 + ... + 595329.

It is an arithmetic number, because the mean of its divisors is an integer number (11380284432).

Almost surely, 2^145981727507 is an apocalyptic number.

145981727507 is a deficient number, since it is larger than the sum of its proper divisors (36102823405).

145981727507 is a wasteful number, since it uses less digits than its factorization.

145981727507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847498.

The product of its (nonzero) digits is 4939200, while the sum is 56.

The spelling of 145981727507 in words is "one hundred forty-five billion, nine hundred eighty-one million, seven hundred twenty-seven thousand, five hundred seven".