19640675520832 has 14 divisors (see below), whose sum is σ = 38974465486778. Its totient is φ = 9820337760384.

The previous prime is 19640675520797. The next prime is 19640675520833. The reversal of 19640675520832 is 23802557604691.

It can be written as a sum of positive squares in only one way, i.e., 10296551462976 + 9344124057856 = 3208824^2 + 3056816^2 .

It is a super-2 number, since 2×19640675520832² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19640675520833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153442777443 + ... + 153442777570.

It is a 1-persistent number, because it is pandigital, but 2⋅19640675520832 = 39281351041664 is not.

Almost surely, 2^{19640675520832} is an apocalyptic number.

It is an amenable number.

19640675520832 is a deficient number, since it is larger than the sum of its proper divisors (19333789965946).

19640675520832 is an equidigital number, since it uses as much as digits as its factorization.

19640675520832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306885555025 (or 306885555015 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 19640675520832 in words is "nineteen trillion, six hundred forty billion, six hundred seventy-five million, five hundred twenty thousand, eight hundred thirty-two".