145220333556 has 24 divisors (see below), whose sum is σ = 338865153984. Its totient is φ = 48404248000.

The previous prime is 145220333519. The next prime is 145220333567. The reversal of 145220333556 is 655333022541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69345 + ... + 543368.

It is an arithmetic number, because the mean of its divisors is an integer number (14119381416).

Almost surely, 2^145220333556 is an apocalyptic number.

It is an amenable number.

145220333556 is an abundant number, since it is smaller than the sum of its proper divisors (193644820428).

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

145220333556 is a wasteful number, since it uses less digits than its factorization.

145220333556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632471 (or 632469 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 145220333556 in words is "one hundred forty-five billion, two hundred twenty million, three hundred thirty-three thousand, five hundred fifty-six".