145121465552 has 20 divisors (see below), whose sum is σ = 321340388256. Its totient is φ = 62194913760.

The previous prime is 145121465539. The next prime is 145121465591. The reversal of 145121465552 is 255564121541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647863574 + ... + 647863797.

Almost surely, 2^145121465552 is an apocalyptic number.

It is an amenable number.

145121465552 is an abundant number, since it is smaller than the sum of its proper divisors (176218922704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145121465552 is a wasteful number, since it uses less digits than its factorization.

145121465552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295727386 (or 1295727380 counting only the distinct ones).

The product of its digits is 240000, while the sum is 41.

The spelling of 145121465552 in words is "one hundred forty-five billion, one hundred twenty-one million, four hundred sixty-five thousand, five hundred fifty-two".