19504084978297 has 16 divisors (see below), whose sum is σ = 19595357821312. Its totient is φ = 19413035631360.

The previous prime is 19504084978249. The next prime is 19504084978309. The reversal of 19504084978297 is 79287948040591.

It is a cyclic number.

It is not a de Polignac number, because 19504084978297 - 2¹⁹ = 19504084454009 is a prime.

It is a super-2 number, since 2×19504084978297² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19504084978597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544834603 + ... + 544870399.

It is an arithmetic number, because the mean of its divisors is an integer number (1224709863832).

Almost surely, 2^{19504084978297} is an apocalyptic number.

It is an amenable number.

19504084978297 is a deficient number, since it is larger than the sum of its proper divisors (91272843015).

19504084978297 is a wasteful number, since it uses less digits than its factorization.

19504084978297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38848.

The product of its (nonzero) digits is 365783040, while the sum is 73.

The spelling of 19504084978297 in words is "nineteen trillion, five hundred four billion, eighty-four million, nine hundred seventy-eight thousand, two hundred ninety-seven".