145742771823 has 16 divisors (see below), whose sum is σ = 212000737536. Its totient is φ = 88324264640.

The previous prime is 145742771813. The next prime is 145742771849. The reversal of 145742771823 is 328177247541.

It is a cyclic number.

It is not a de Polignac number, because 145742771823 - 2⁸ = 145742771567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145742771813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575011 + ... + 788747.

It is an arithmetic number, because the mean of its divisors is an integer number (13250046096).

Almost surely, 2^145742771823 is an apocalyptic number.

145742771823 is a deficient number, since it is larger than the sum of its proper divisors (66257965713).

145742771823 is a wasteful number, since it uses less digits than its factorization.

145742771823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234414.

The product of its digits is 2634240, while the sum is 51.

The spelling of 145742771823 in words is "one hundred forty-five billion, seven hundred forty-two million, seven hundred seventy-one thousand, eight hundred twenty-three".