145396693541 has 4 divisors (see below), whose sum is σ = 158614574784. Its totient is φ = 132178812300.

The previous prime is 145396693529. The next prime is 145396693553.

145396693541 is nontrivially palindromic in base 10.

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.

It is an interprime number because it is at equal distance from previous prime (145396693529) and next prime (145396693553).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145396693541 is a prime.

It is a super-2 number, since 2×145396693541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145396693571) 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, 6608940605 + ... + 6608940626.

It is an arithmetic number, because the mean of its divisors is an integer number (39653643696).

Almost surely, 2^145396693541 is an apocalyptic number.

145396693541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

145396693541 is a deficient number, since it is larger than the sum of its proper divisors (13217881243).

145396693541 is a wasteful number, since it uses less digits than its factorization.

145396693541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13217881242.

The product of its digits is 10497600, while the sum is 56.

The spelling of 145396693541 in words is "one hundred forty-five billion, three hundred ninety-six million, six hundred ninety-three thousand, five hundred forty-one".