145212211500 has 48 divisors (see below), whose sum is σ = 422857964256. Its totient is φ = 38723256000.

The previous prime is 145212211493. The next prime is 145212211561. The reversal of 145212211500 is 5112212541.

It is a happy 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, 48402571 + ... + 48405570.

It is an arithmetic number, because the mean of its divisors is an integer number (8809540922).

Almost surely, 2^145212211500 is an apocalyptic number.

145212211500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145212211500 is an abundant number, since it is smaller than the sum of its proper divisors (277645752756).

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

145212211500 is a wasteful number, since it uses less digits than its factorization.

145212211500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96808163 (or 96808151 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The spelling of 145212211500 in words is "one hundred forty-five billion, two hundred twelve million, two hundred eleven thousand, five hundred".