1097894987901 has 12 divisors (see below), whose sum is σ = 1587685926528. Its totient is φ = 731081863944.

The previous prime is 1097894987879. The next prime is 1097894987953.

1097894987901 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1097894987901 - 2⁶ = 1097894987837 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1097894987901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097894988901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70669135 + ... + 70684668.

It is an arithmetic number, because the mean of its divisors is an integer number (132307160544).

Almost surely, 2^{1097894987901} is an apocalyptic number.

It is an amenable number.

1097894987901 is a deficient number, since it is larger than the sum of its proper divisors (489790938627).

1097894987901 is a wasteful number, since it uses less digits than its factorization.

1097894987901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141354672 (or 141354669 counting only the distinct ones).

The product of its (nonzero) digits is 82301184, while the sum is 72.

The spelling of 1097894987901 in words is "one trillion, ninety-seven billion, eight hundred ninety-four million, nine hundred eighty-seven thousand, nine hundred one".