145216556412 has 12 divisors (see below), whose sum is σ = 338838631656. Its totient is φ = 48405518800.

The previous prime is 145216556411. The next prime is 145216556447. The reversal of 145216556412 is 214655612541.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145216556411) 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, 6050689839 + ... + 6050689862.

It is an arithmetic number, because the mean of its divisors is an integer number (28236552638).

Almost surely, 2^145216556412 is an apocalyptic number.

145216556412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145216556412 is an abundant number, since it is smaller than the sum of its proper divisors (193622075244).

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

145216556412 is a wasteful number, since it uses less digits than its factorization.

145216556412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12101379708 (or 12101379706 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The spelling of 145216556412 in words is "one hundred forty-five billion, two hundred sixteen million, five hundred fifty-six thousand, four hundred twelve".