145554085075523 has 4 divisors (see below), whose sum is σ = 148300388567568. Its totient is φ = 142807781583480.

The previous prime is 145554085075519. The next prime is 145554085075583. The reversal of 145554085075523 is 325570580455541.

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 145554085075523 - 2² = 145554085075519 is a prime.

It is a super-2 number, since 2×145554085075523² (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 (145554085075513) 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, 1373151745943 + ... + 1373151746048.

It is an arithmetic number, because the mean of its divisors is an integer number (37075097141892).

Almost surely, 2^{145554085075523} is an apocalyptic number.

145554085075523 is a deficient number, since it is larger than the sum of its proper divisors (2746303492045).

145554085075523 is an equidigital number, since it uses as much as digits as its factorization.

145554085075523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2746303492044.

The product of its (nonzero) digits is 84000000, while the sum is 59.

The spelling of 145554085075523 in words is "one hundred forty-five trillion, five hundred fifty-four billion, eighty-five million, seventy-five thousand, five hundred twenty-three".