38656061643 has 32 divisors (see below), whose sum is σ = 55511217216. Its totient is φ = 23840206848.

The previous prime is 38656061623. The next prime is 38656061687. The reversal of 38656061643 is 34616065683.

It is not a de Polignac number, because 38656061643 - 2¹² = 38656057547 is a prime.

It is a super-2 number, since 2×38656061643² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38656061592 and 38656061601.

It is not an unprimeable number, because it can be changed into a prime (38656061623) 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, 1073121 + ... + 1108557.

It is an arithmetic number, because the mean of its divisors is an integer number (1734725538).

Almost surely, 2^38656061643 is an apocalyptic number.

38656061643 is a deficient number, since it is larger than the sum of its proper divisors (16855155573).

38656061643 is a wasteful number, since it uses less digits than its factorization.

38656061643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35823.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 38656061643 in words is "thirty-eight billion, six hundred fifty-six million, sixty-one thousand, six hundred forty-three".