19139507061 has 8 divisors (see below), whose sum is σ = 25609518240. Its totient is φ = 12714583632.

The previous prime is 19139507059. The next prime is 19139507077. The reversal of 19139507061 is 16070593191.

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

It is not a de Polignac number, because 19139507061 - 2¹ = 19139507059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19139507161) 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, 11270946 + ... + 11272643.

It is an arithmetic number, because the mean of its divisors is an integer number (3201189780).

Almost surely, 2^19139507061 is an apocalyptic number.

It is an amenable number.

19139507061 is a deficient number, since it is larger than the sum of its proper divisors (6470011179).

19139507061 is a wasteful number, since it uses less digits than its factorization.

19139507061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22543875.

The product of its (nonzero) digits is 51030, while the sum is 42.

The spelling of 19139507061 in words is "nineteen billion, one hundred thirty-nine million, five hundred seven thousand, sixty-one".