10641973981 has 16 divisors (see below), whose sum is σ = 11167168320. Its totient is φ = 10129956480.

The previous prime is 10641973957. The next prime is 10641974027. The reversal of 10641973981 is 18937914601.

It is a cyclic number.

It is not a de Polignac number, because 10641973981 - 2⁹ = 10641973469 is a prime.

It is a super-2 number, since 2×10641973981² (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 (10641973921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1952446 + ... + 1957888.

It is an arithmetic number, because the mean of its divisors is an integer number (697948020).

Almost surely, 2^10641973981 is an apocalyptic number.

It is an amenable number.

10641973981 is a deficient number, since it is larger than the sum of its proper divisors (525194339).

10641973981 is a wasteful number, since it uses less digits than its factorization.

10641973981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6636.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 10641973981 in words is "ten billion, six hundred forty-one million, nine hundred seventy-three thousand, nine hundred eighty-one".