19797788179292 has 6 divisors (see below), whose sum is σ = 34646129313768. Its totient is φ = 9898894089644.

The previous prime is 19797788179259. The next prime is 19797788179313. The reversal of 19797788179292 is 29297188779791.

It is a super-2 number, since 2×19797788179292² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2474723522408 + ... + 2474723522415.

It is an arithmetic number, because the mean of its divisors is an integer number (5774354885628).

Almost surely, 2^{19797788179292} is an apocalyptic number.

It is an amenable number.

19797788179292 is a deficient number, since it is larger than the sum of its proper divisors (14848341134476).

19797788179292 is a wasteful number, since it uses less digits than its factorization.

19797788179292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4949447044827 (or 4949447044825 counting only the distinct ones).

The product of its digits is 4032758016, while the sum is 86.

The spelling of 19797788179292 in words is "nineteen trillion, seven hundred ninety-seven billion, seven hundred eighty-eight million, one hundred seventy-nine thousand, two hundred ninety-two".