10526978881 has 2 divisors, whose sum is σ = 10526978882. Its totient is φ = 10526978880.

The previous prime is 10526978873. The next prime is 10526978921. The reversal of 10526978881 is 18887962501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9470403856 + 1056575025 = 97316^2 + 32505^2 .

It is a cyclic number.

It is not a de Polignac number, because 10526978881 - 2³ = 10526978873 is a prime.

It is a super-2 number, since 2×10526978881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10526978081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5263489440 + 5263489441.

It is an arithmetic number, because the mean of its divisors is an integer number (5263489441).

Almost surely, 2^10526978881 is an apocalyptic number.

It is an amenable number.

10526978881 is a deficient number, since it is larger than the sum of its proper divisors (1).

10526978881 is an equidigital number, since it uses as much as digits as its factorization.

10526978881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 55.

The spelling of 10526978881 in words is "ten billion, five hundred twenty-six million, nine hundred seventy-eight thousand, eight hundred eighty-one".