19772999995 has 8 divisors (see below), whose sum is σ = 27117257184. Its totient is φ = 13558628544.

The previous prime is 19772999993. The next prime is 19773000011. The reversal of 19772999995 is 59999927791.

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 19772999995 - 2¹ = 19772999993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19772999993) 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, 282471394 + ... + 282471463.

It is an arithmetic number, because the mean of its divisors is an integer number (3389657148).

Almost surely, 2^19772999995 is an apocalyptic number.

19772999995 is a deficient number, since it is larger than the sum of its proper divisors (7344257189).

19772999995 is an equidigital number, since it uses as much as digits as its factorization.

19772999995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564942869.

The product of its digits is 260406090, while the sum is 76.

The spelling of 19772999995 in words is "nineteen billion, seven hundred seventy-two million, nine hundred ninety-nine thousand, nine hundred ninety-five".