19557466977027 has 36 divisors (see below), whose sum is σ = 31344112817928. Its totient is φ = 10815189033600.

The previous prime is 19557466977023. The next prime is 19557466977043. The reversal of 19557466977027 is 72077966475591.

It is not a de Polignac number, because 19557466977027 - 2² = 19557466977023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19557466977027.

It is not an unprimeable number, because it can be changed into a prime (19557466977023) 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 in 35 ways as a sum of consecutive naturals, for example, 69080374 + ... + 69362907.

It is an arithmetic number, because the mean of its divisors is an integer number (870669800498).

Almost surely, 2^{19557466977027} is an apocalyptic number.

19557466977027 is a deficient number, since it is larger than the sum of its proper divisors (11786645840901).

19557466977027 is a wasteful number, since it uses less digits than its factorization.

19557466977027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138443360 (or 138443322 counting only the distinct ones).

The product of its (nonzero) digits is 1400263200, while the sum is 75.

The spelling of 19557466977027 in words is "nineteen trillion, five hundred fifty-seven billion, four hundred sixty-six million, nine hundred seventy-seven thousand, twenty-seven".