1010778533281 has 4 divisors (see below), whose sum is σ = 1102667490864. Its totient is φ = 918889575700.

The previous prime is 1010778533207. The next prime is 1010778533321. The reversal of 1010778533281 is 1823358770101.

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 not a de Polignac number, because 1010778533281 - 2²¹ = 1010776436129 is a prime.

It is a super-2 number, since 2×1010778533281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010778533201) 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, 45944478775 + ... + 45944478796.

It is an arithmetic number, because the mean of its divisors is an integer number (275666872716).

Almost surely, 2^{1010778533281} is an apocalyptic number.

1010778533281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1010778533281 is a deficient number, since it is larger than the sum of its proper divisors (91888957583).

1010778533281 is an equidigital number, since it uses as much as digits as its factorization.

1010778533281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91888957582.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 1010778533281 in words is "one trillion, ten billion, seven hundred seventy-eight million, five hundred thirty-three thousand, two hundred eighty-one".