19893097167881 has 24 divisors (see below), whose sum is σ = 24003098169984. Its totient is φ = 16148020291200.

The previous prime is 19893097167817. The next prime is 19893097167883. The reversal of 19893097167881 is 18876179039891.

It is not a de Polignac number, because 19893097167881 - 2⁶ = 19893097167817 is a prime.

It is a super-2 number, since 2×19893097167881² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19893097167883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5672876 + ... + 8483378.

It is an arithmetic number, because the mean of its divisors is an integer number (1000129090416).

Almost surely, 2^{19893097167881} is an apocalyptic number.

It is an amenable number.

19893097167881 is a deficient number, since it is larger than the sum of its proper divisors (4110001002103).

19893097167881 is a wasteful number, since it uses less digits than its factorization.

19893097167881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813349 (or 2813330 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 77.

The spelling of 19893097167881 in words is "nineteen trillion, eight hundred ninety-three billion, ninety-seven million, one hundred sixty-seven thousand, eight hundred eighty-one".