19776977134 has 8 divisors (see below), whose sum is σ = 29942713368. Its totient is φ = 9796072680.

The previous prime is 19776977123. The next prime is 19776977137. The reversal of 19776977134 is 43177967791.

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

It is a super-2 number, since 2×19776977134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19776977137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46207677 + ... + 46208104.

It is an arithmetic number, because the mean of its divisors is an integer number (3742839171).

Almost surely, 2^19776977134 is an apocalyptic number.

19776977134 is a deficient number, since it is larger than the sum of its proper divisors (10165736234).

19776977134 is a wasteful number, since it uses less digits than its factorization.

19776977134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92415890.

The product of its digits is 14002632, while the sum is 61.

The spelling of 19776977134 in words is "nineteen billion, seven hundred seventy-six million, nine hundred seventy-seven thousand, one hundred thirty-four".