19886651494054 has 12 divisors (see below), whose sum is σ = 31687899699924. Its totient is φ = 9358424232224.

The previous prime is 19886651494027. The next prime is 19886651494057. The reversal of 19886651494054 is 45049415668891.

It is a super-3 number, since 3×19886651494054³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19886651494057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17202985144 + ... + 17202986299.

It is an arithmetic number, because the mean of its divisors is an integer number (2640658308327).

Almost surely, 2^{19886651494054} is an apocalyptic number.

19886651494054 is a deficient number, since it is larger than the sum of its proper divisors (11801248205870).

19886651494054 is a wasteful number, since it uses less digits than its factorization.

19886651494054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34405971479 (or 34405971462 counting only the distinct ones).

The product of its (nonzero) digits is 298598400, while the sum is 70.

The spelling of 19886651494054 in words is "nineteen trillion, eight hundred eighty-six billion, six hundred fifty-one million, four hundred ninety-four thousand, fifty-four".