1071367147781 has 6 divisors (see below), whose sum is σ = 1246284233190. Its totient is φ = 918314698056.

The previous prime is 1071367147687. The next prime is 1071367147813. The reversal of 1071367147781 is 1877417631701.

1071367147781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1003332772225 + 68034375556 = 1001665^2 + 260834^2 .

It is not a de Polignac number, because 1071367147781 - 2²² = 1071362953477 is a prime.

It is a super-2 number, since 2×1071367147781² (a number of 25 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 (1071367147481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10932317786 + ... + 10932317883.

It is an arithmetic number, because the mean of its divisors is an integer number (207714038865).

Almost surely, 2^{1071367147781} is an apocalyptic number.

It is an amenable number.

1071367147781 is a deficient number, since it is larger than the sum of its proper divisors (174917085409).

1071367147781 is an equidigital number, since it uses as much as digits as its factorization.

1071367147781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21864635683 (or 21864635676 counting only the distinct ones).

The product of its (nonzero) digits is 1382976, while the sum is 53.

The spelling of 1071367147781 in words is "one trillion, seventy-one billion, three hundred sixty-seven million, one hundred forty-seven thousand, seven hundred eighty-one".