438257535817513 has 16 divisors (see below), whose sum is σ = 466469694637056. Its totient is φ = 410315658799360.

The previous prime is 438257535817457. The next prime is 438257535817531. The reversal of 438257535817513 is 315718535752834.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438257535817513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438257535517513) 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, 768354495 + ... + 768924667.

It is an arithmetic number, because the mean of its divisors is an integer number (29154355914816).

Almost surely, 2^{438257535817513} is an apocalyptic number.

It is an amenable number.

438257535817513 is a deficient number, since it is larger than the sum of its proper divisors (28212158819543).

438257535817513 is a wasteful number, since it uses less digits than its factorization.

438257535817513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807104.

The product of its digits is 423360000, while the sum is 67.

The spelling of 438257535817513 in words is "four hundred thirty-eight trillion, two hundred fifty-seven billion, five hundred thirty-five million, eight hundred seventeen thousand, five hundred thirteen".