145012403261 has 4 divisors (see below), whose sum is σ = 158195349024. Its totient is φ = 131829457500.

The previous prime is 145012403257. The next prime is 145012403267. The reversal of 145012403261 is 162304210541.

145012403261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 162304210541 = 11 ⋅14754928231.

It is a cyclic number.

It is not a de Polignac number, because 145012403261 - 2² = 145012403257 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 (145012403267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6591472865 + ... + 6591472886.

It is an arithmetic number, because the mean of its divisors is an integer number (39548837256).

Almost surely, 2^145012403261 is an apocalyptic number.

145012403261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145012403261 is a deficient number, since it is larger than the sum of its proper divisors (13182945763).

145012403261 is a wasteful number, since it uses less digits than its factorization.

145012403261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13182945762.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 145012403261 in words is "one hundred forty-five billion, twelve million, four hundred three thousand, two hundred sixty-one".