145236365340638 has 32 divisors (see below), whose sum is σ = 256453915536000. Its totient is φ = 60816214136160.

The previous prime is 145236365340631. The next prime is 145236365340643. The reversal of 145236365340638 is 836043563632541.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145236365340631) 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, 508694420 + ... + 508979847.

It is an arithmetic number, because the mean of its divisors is an integer number (8014184860500).

Almost surely, 2^{145236365340638} is an apocalyptic number.

145236365340638 is a deficient number, since it is larger than the sum of its proper divisors (111217550195362).

145236365340638 is a wasteful number, since it uses less digits than its factorization.

145236365340638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017674792.

The product of its (nonzero) digits is 111974400, while the sum is 59.

The spelling of 145236365340638 in words is "one hundred forty-five trillion, two hundred thirty-six billion, three hundred sixty-five million, three hundred forty thousand, six hundred thirty-eight".