20145256316 has 12 divisors (see below), whose sum is σ = 35257157880. Its totient is φ = 10071782640.

The previous prime is 20145256303. The next prime is 20145256321. The reversal of 20145256316 is 61365254102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156170 + ... + 254321.

It is an arithmetic number, because the mean of its divisors is an integer number (2938096490).

Almost surely, 2^20145256316 is an apocalyptic number.

It is an amenable number.

20145256316 is a deficient number, since it is larger than the sum of its proper divisors (15111901564).

20145256316 is a wasteful number, since it uses less digits than its factorization.

20145256316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422764 (or 422762 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 20145256316 in words is "twenty billion, one hundred forty-five million, two hundred fifty-six thousand, three hundred sixteen".