19426506229712 has 10 divisors (see below), whose sum is σ = 37638855820098. Its totient is φ = 9713253114848.

The previous prime is 19426506229693. The next prime is 19426506229717. The reversal of 19426506229712 is 21792260562491.

It can be written as a sum of positive squares in only one way, i.e., 19382147130256 + 44359099456 = 4402516^2 + 210616^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19426506229717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 607078319663 + ... + 607078319694.

Almost surely, 2^{19426506229712} is an apocalyptic number.

It is an amenable number.

19426506229712 is a deficient number, since it is larger than the sum of its proper divisors (18212349590386).

19426506229712 is a wasteful number, since it uses less digits than its factorization.

19426506229712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214156639365 (or 1214156639359 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 19426506229712 in words is "nineteen trillion, four hundred twenty-six billion, five hundred six million, two hundred twenty-nine thousand, seven hundred twelve".