145206221512 has 32 divisors (see below), whose sum is σ = 297029063520. Its totient is φ = 65999197440.

The previous prime is 145206221507. The next prime is 145206221527. The reversal of 145206221512 is 215122602541.

It is a super-2 number, since 2×145206221512² (a number of 23 digits) contains 22 as substring.

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, 2180128 + ... + 2245744.

It is an arithmetic number, because the mean of its divisors is an integer number (9282158235).

Almost surely, 2^145206221512 is an apocalyptic number.

It is an amenable number.

145206221512 is an abundant number, since it is smaller than the sum of its proper divisors (151822842008).

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

145206221512 is a wasteful number, since it uses less digits than its factorization.

145206221512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90781 (or 90777 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 145206221512 in words is "one hundred forty-five billion, two hundred six million, two hundred twenty-one thousand, five hundred twelve".