145533553550 has 96 divisors (see below), whose sum is σ = 338295847680. Its totient is φ = 45252345600.

The previous prime is 145533553531. The next prime is 145533553553. The reversal of 145533553550 is 55355335541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145533553553) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1568042 + ... + 1658258.

It is an arithmetic number, because the mean of its divisors is an integer number (3523915080).

Almost surely, 2^145533553550 is an apocalyptic number.

145533553550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145533553550 is an abundant number, since it is smaller than the sum of its proper divisors (192762294130).

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

145533553550 is a wasteful number, since it uses less digits than its factorization.

145533553550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90666 (or 90661 counting only the distinct ones).

The product of its (nonzero) digits is 1687500, while the sum is 44.

The spelling of 145533553550 in words is "one hundred forty-five billion, five hundred thirty-three million, five hundred fifty-three thousand, five hundred fifty".