145781565051 has 16 divisors (see below), whose sum is σ = 204871952160. Its totient is φ = 92065908480.

The previous prime is 145781565023. The next prime is 145781565169. The reversal of 145781565051 is 150565187541.

It is not a de Polignac number, because 145781565051 - 2⁶ = 145781564987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145781565011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15803410 + ... + 15812631.

It is an arithmetic number, because the mean of its divisors is an integer number (12804497010).

Almost surely, 2^145781565051 is an apocalyptic number.

145781565051 is a deficient number, since it is larger than the sum of its proper divisors (59090387109).

145781565051 is a wasteful number, since it uses less digits than its factorization.

145781565051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31616126.

The product of its (nonzero) digits is 840000, while the sum is 48.

The spelling of 145781565051 in words is "one hundred forty-five billion, seven hundred eighty-one million, five hundred sixty-five thousand, fifty-one".