139673401481 has 8 divisors (see below), whose sum is σ = 144504336000. Its totient is φ = 134843441040.

The previous prime is 139673401421. The next prime is 139673401487. The reversal of 139673401481 is 184104376931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139673401481 is a prime.

It is a super-2 number, since 2×139673401481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139673401487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54416 + ... + 531326.

It is an arithmetic number, because the mean of its divisors is an integer number (18063042000).

Almost surely, 2^139673401481 is an apocalyptic number.

It is an amenable number.

139673401481 is a deficient number, since it is larger than the sum of its proper divisors (4830934519).

139673401481 is a wasteful number, since it uses less digits than its factorization.

139673401481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487039.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 139673401481 in words is "one hundred thirty-nine billion, six hundred seventy-three million, four hundred one thousand, four hundred eighty-one".