438101138501481 has 32 divisors (see below), whose sum is σ = 718937501506560. Its totient is φ = 231085575572544.

The previous prime is 438101138501479. The next prime is 438101138501497. The reversal of 438101138501481 is 184105831101834.

It is not a de Polignac number, because 438101138501481 - 2¹ = 438101138501479 is a prime.

It is a super-2 number, since 2×438101138501481² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 438101138501481.

It is not an unprimeable number, because it can be changed into a prime (438101138501381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88885846 + ... + 93685088.

It is an arithmetic number, because the mean of its divisors is an integer number (22466796922080).

Almost surely, 2^{438101138501481} is an apocalyptic number.

It is an amenable number.

438101138501481 is a deficient number, since it is larger than the sum of its proper divisors (280836363005079).

438101138501481 is a wasteful number, since it uses less digits than its factorization.

438101138501481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5133645.

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 438101138501481 in words is "four hundred thirty-eight trillion, one hundred one billion, one hundred thirty-eight million, five hundred one thousand, four hundred eighty-one".