148881555545 has 4 divisors (see below), whose sum is σ = 178657866660. Its totient is φ = 119105244432.

The previous prime is 148881555541. The next prime is 148881555577. The reversal of 148881555545 is 545555188841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78344569801 + 70536985744 = 279901^2 + 265588^2 .

It is a cyclic number.

It is not a de Polignac number, because 148881555545 - 2² = 148881555541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148881555541) 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, 14888155550 + ... + 14888155559.

It is an arithmetic number, because the mean of its divisors is an integer number (44664466665).

Almost surely, 2^148881555545 is an apocalyptic number.

It is an amenable number.

148881555545 is a deficient number, since it is larger than the sum of its proper divisors (29776311115).

148881555545 is an equidigital number, since it uses as much as digits as its factorization.

148881555545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29776311114.

The product of its digits is 25600000, while the sum is 59.

The spelling of 148881555545 in words is "one hundred forty-eight billion, eight hundred eighty-one million, five hundred fifty-five thousand, five hundred forty-five".