38744518033465 has 16 divisors (see below), whose sum is σ = 46923175054800. Its totient is φ = 30709151039232.

The previous prime is 38744518033447. The next prime is 38744518033469. The reversal of 38744518033465 is 56433081544783.

It can be written as a sum of positive squares in 8 ways, for example, as 7048642685184 + 31695875348281 = 2654928^2 + 5629909^2 .

It is a cyclic number.

It is not a de Polignac number, because 38744518033465 - 2²³ = 38744509644857 is a prime.

It is a super-2 number, since 2×38744518033465² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38744518033469) 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, 5571439 + ... + 10417771.

It is an arithmetic number, because the mean of its divisors is an integer number (2932698440925).

Almost surely, 2^{38744518033465} is an apocalyptic number.

It is an amenable number.

38744518033465 is a deficient number, since it is larger than the sum of its proper divisors (8178657021335).

38744518033465 is a wasteful number, since it uses less digits than its factorization.

38744518033465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861116.

The product of its (nonzero) digits is 116121600, while the sum is 61.

The spelling of 38744518033465 in words is "thirty-eight trillion, seven hundred forty-four billion, five hundred eighteen million, thirty-three thousand, four hundred sixty-five".