39061981321 has 16 divisors (see below), whose sum is σ = 43278046848. Its totient is φ = 34958246400.

The previous prime is 39061981313. The next prime is 39061981337. The reversal of 39061981321 is 12318916093.

It is not a de Polignac number, because 39061981321 - 2³ = 39061981313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39061981381) 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, 488455 + ... + 562771.

It is an arithmetic number, because the mean of its divisors is an integer number (2704877928).

Almost surely, 2^39061981321 is an apocalyptic number.

It is an amenable number.

39061981321 is a deficient number, since it is larger than the sum of its proper divisors (4216065527).

39061981321 is a wasteful number, since it uses less digits than its factorization.

39061981321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75072.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 39061981321 in words is "thirty-nine billion, sixty-one million, nine hundred eighty-one thousand, three hundred twenty-one".