19724069496957 has 8 divisors (see below), whose sum is σ = 30055724947776. Its totient is φ = 11270896855392.

The previous prime is 19724069496883. The next prime is 19724069496973. The reversal of 19724069496957 is 75969496042791.

It is a happy number.

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

It is not a de Polignac number, because 19724069496957 - 2⁷ = 19724069496829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19724069492957) 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, 469620702288 + ... + 469620702329.

It is an arithmetic number, because the mean of its divisors is an integer number (3756965618472).

Almost surely, 2^{19724069496957} is an apocalyptic number.

It is an amenable number.

19724069496957 is a deficient number, since it is larger than the sum of its proper divisors (10331655450819).

19724069496957 is an equidigital number, since it uses as much as digits as its factorization.

19724069496957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939241404627.

The product of its (nonzero) digits is 1851776640, while the sum is 78.

The spelling of 19724069496957 in words is "nineteen trillion, seven hundred twenty-four billion, sixty-nine million, four hundred ninety-six thousand, nine hundred fifty-seven".