38049906661 has 32 divisors (see below), whose sum is σ = 41708685312. Its totient is φ = 34503805440.

The previous prime is 38049906647. The next prime is 38049906679. The reversal of 38049906661 is 16660994083.

It is not a de Polignac number, because 38049906661 - 2²⁷ = 37915688933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38049906599 and 38049906608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38049906691) 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, 121565041 + ... + 121565353.

It is an arithmetic number, because the mean of its divisors is an integer number (1303396416).

Almost surely, 2^38049906661 is an apocalyptic number.

It is an amenable number.

38049906661 is a deficient number, since it is larger than the sum of its proper divisors (3658778651).

38049906661 is a wasteful number, since it uses less digits than its factorization.

38049906661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 38049906661 in words is "thirty-eight billion, forty-nine million, nine hundred six thousand, six hundred sixty-one".