10069786981 has 4 divisors (see below), whose sum is σ = 10136474464. Its totient is φ = 10003099500.

The previous prime is 10069786943. The next prime is 10069787023. The reversal of 10069786981 is 18968796001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18968796001 = 41 ⋅462653561.

It is a cyclic number.

It is not a de Polignac number, because 10069786981 - 2²⁹ = 9532916069 is a prime.

It is a super-2 number, since 2×10069786981² (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 (10069786901) 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, 33343515 + ... + 33343816.

It is an arithmetic number, because the mean of its divisors is an integer number (2534118616).

Almost surely, 2^10069786981 is an apocalyptic number.

It is an amenable number.

10069786981 is a deficient number, since it is larger than the sum of its proper divisors (66687483).

10069786981 is an equidigital number, since it uses as much as digits as its factorization.

10069786981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66687482.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The spelling of 10069786981 in words is "ten billion, sixty-nine million, seven hundred eighty-six thousand, nine hundred eighty-one".