19772055719 has 8 divisors (see below), whose sum is σ = 21979853952. Its totient is φ = 17662381920.

The previous prime is 19772055689. The next prime is 19772055727. The reversal of 19772055719 is 91755027791.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19772055719 - 2²⁸ = 19503620263 is a prime.

It is a super-2 number, since 2×19772055719² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19772055749) 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, 24530684 + ... + 24531489.

It is an arithmetic number, because the mean of its divisors is an integer number (2747481744).

Almost surely, 2^19772055719 is an apocalyptic number.

19772055719 is a deficient number, since it is larger than the sum of its proper divisors (2207798233).

19772055719 is a wasteful number, since it uses less digits than its factorization.

19772055719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49062217.

The product of its (nonzero) digits is 1389150, while the sum is 53.

The spelling of 19772055719 in words is "nineteen billion, seven hundred seventy-two million, fifty-five thousand, seven hundred nineteen".