145239649212 has 48 divisors (see below), whose sum is σ = 388384657920. Its totient is φ = 41381443392.

The previous prime is 145239649207. The next prime is 145239649307. The reversal of 145239649212 is 212946932541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377983 + ... + 2438294.

It is an arithmetic number, because the mean of its divisors is an integer number (8091347040).

Almost surely, 2^145239649212 is an apocalyptic number.

145239649212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

145239649212 is an abundant number, since it is smaller than the sum of its proper divisors (243145008708).

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

145239649212 is a wasteful number, since it uses less digits than its factorization.

145239649212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816650 (or 4816648 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The spelling of 145239649212 in words is "one hundred forty-five billion, two hundred thirty-nine million, six hundred forty-nine thousand, two hundred twelve".