145702977439 has 4 divisors (see below), whose sum is σ = 146815214040. Its totient is φ = 144590740840.

The previous prime is 145702977391. The next prime is 145702977463. The reversal of 145702977439 is 934779207541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145702977439 - 2¹¹ = 145702975391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145702972439) 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, 556118104 + ... + 556118365.

It is an arithmetic number, because the mean of its divisors is an integer number (36703803510).

Almost surely, 2^145702977439 is an apocalyptic number.

145702977439 is a deficient number, since it is larger than the sum of its proper divisors (1112236601).

145702977439 is a wasteful number, since it uses less digits than its factorization.

145702977439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112236600.

The product of its (nonzero) digits is 13335840, while the sum is 58.

The spelling of 145702977439 in words is "one hundred forty-five billion, seven hundred two million, nine hundred seventy-seven thousand, four hundred thirty-nine".