38403644475757 has 32 divisors (see below), whose sum is σ = 44433119047680. Its totient is φ = 32849124000000.

The previous prime is 38403644475727. The next prime is 38403644475761. The reversal of 38403644475757 is 75757444630483.

It is a happy number.

It is not a de Polignac number, because 38403644475757 - 2¹¹ = 38403644473709 is a prime.

It is a super-2 number, since 2×38403644475757² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38403644475692 and 38403644475701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38403644475727) 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, 5450757 + ... + 10320757.

It is an arithmetic number, because the mean of its divisors is an integer number (1388534970240).

Almost surely, 2^{38403644475757} is an apocalyptic number.

It is an amenable number.

38403644475757 is a deficient number, since it is larger than the sum of its proper divisors (6029474571923).

38403644475757 is a wasteful number, since it uses less digits than its factorization.

38403644475757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870545.

The product of its (nonzero) digits is 948326400, while the sum is 67.

The spelling of 38403644475757 in words is "thirty-eight trillion, four hundred three billion, six hundred forty-four million, four hundred seventy-five thousand, seven hundred fifty-seven".