145665077640 has 64 divisors (see below), whose sum is σ = 437157639360. Its totient is φ = 38829584640.

The previous prime is 145665077599. The next prime is 145665077641. The reversal of 145665077640 is 46770566541.

It is not an unprimeable number, because it can be changed into a prime (145665077641) 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, 100630 + ... + 549050.

It is an arithmetic number, because the mean of its divisors is an integer number (6830588115).

Almost surely, 2^145665077640 is an apocalyptic number.

145665077640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145665077640 is an abundant number, since it is smaller than the sum of its proper divisors (291492561720).

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

145665077640 is a wasteful number, since it uses less digits than its factorization.

145665077640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451142 (or 451138 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 51.

The spelling of 145665077640 in words is "one hundred forty-five billion, six hundred sixty-five million, seventy-seven thousand, six hundred forty".