10898758981 has 4 divisors (see below), whose sum is σ = 11889555264. Its totient is φ = 9907962700.

The previous prime is 10898758957. The next prime is 10898758993. The reversal of 10898758981 is 18985789801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10898758981 is a prime.

It is a super-2 number, since 2×10898758981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10898758901) 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, 495398125 + ... + 495398146.

It is an arithmetic number, because the mean of its divisors is an integer number (2972388816).

Almost surely, 2^10898758981 is an apocalyptic number.

10898758981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10898758981 is a deficient number, since it is larger than the sum of its proper divisors (990796283).

10898758981 is an equidigital number, since it uses as much as digits as its factorization.

10898758981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990796282.

The product of its (nonzero) digits is 11612160, while the sum is 64.

The spelling of 10898758981 in words is "ten billion, eight hundred ninety-eight million, seven hundred fifty-eight thousand, nine hundred eighty-one".