145159551481 has 12 divisors (see below), whose sum is σ = 173423135872. Its totient is φ = 119012796936.

The previous prime is 145159551473. The next prime is 145159551521. The reversal of 145159551481 is 184155951541.

It is not a de Polignac number, because 145159551481 - 2³ = 145159551473 is a prime.

It is a super-3 number, since 3×145159551481³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (145159551451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19596561 + ... + 19603966.

Almost surely, 2^145159551481 is an apocalyptic number.

It is an amenable number.

145159551481 is a deficient number, since it is larger than the sum of its proper divisors (28263584391).

145159551481 is an equidigital number, since it uses as much as digits as its factorization.

145159551481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39200580 (or 39200557 counting only the distinct ones).

The product of its digits is 720000, while the sum is 49.

It can be divided in two parts, 1451595 and 51481, that added together give a square (1503076 = 1226²).

The spelling of 145159551481 in words is "one hundred forty-five billion, one hundred fifty-nine million, five hundred fifty-one thousand, four hundred eighty-one".