1098980460901 has 4 divisors (see below), whose sum is σ = 1100133641772. Its totient is φ = 1097827280032.

The previous prime is 1098980460883. The next prime is 1098980460913. The reversal of 1098980460901 is 1090640898901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 486682035876 + 612298425025 = 697626^2 + 782495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1098980460901 - 2²³ = 1098972072293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098980460101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576589006 + ... + 576590911.

It is an arithmetic number, because the mean of its divisors is an integer number (275033410443).

Almost surely, 2^{1098980460901} is an apocalyptic number.

It is an amenable number.

1098980460901 is a deficient number, since it is larger than the sum of its proper divisors (1153180871).

1098980460901 is an equidigital number, since it uses as much as digits as its factorization.

1098980460901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153180870.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 1098980460901 in words is "one trillion, ninety-eight billion, nine hundred eighty million, four hundred sixty thousand, nine hundred one".