145363838368691 has 4 divisors (see below), whose sum is σ = 149292590757072. Its totient is φ = 141435085980312.

The previous prime is 145363838368673. The next prime is 145363838368711. The reversal of 145363838368691 is 196863838363541.

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 145363838368691 - 2⁶ = 145363838368627 is a prime.

It is a super-2 number, since 2×145363838368691² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145363838367691) 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, 1964376194135 + ... + 1964376194208.

It is an arithmetic number, because the mean of its divisors is an integer number (37323147689268).

Almost surely, 2^{145363838368691} is an apocalyptic number.

145363838368691 is a deficient number, since it is larger than the sum of its proper divisors (3928752388381).

145363838368691 is an equidigital number, since it uses as much as digits as its factorization.

145363838368691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928752388380.

The product of its digits is 1612431360, while the sum is 74.

The spelling of 145363838368691 in words is "one hundred forty-five trillion, three hundred sixty-three billion, eight hundred thirty-eight million, three hundred sixty-eight thousand, six hundred ninety-one".