1010256131365 has 64 divisors (see below), whose sum is σ = 1389474777600. Its totient is φ = 698972073984.

The previous prime is 1010256131363. The next prime is 1010256131371. The reversal of 1010256131365 is 5631316520101.

It is a cyclic number.

It is not a de Polignac number, because 1010256131365 - 2¹ = 1010256131363 is a prime.

It is a super-2 number, since 2×1010256131365² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1010256131365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010256131363) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 102903937 + ... + 102913753.

It is an arithmetic number, because the mean of its divisors is an integer number (21710543400).

Almost surely, 2^{1010256131365} is an apocalyptic number.

It is an amenable number.

1010256131365 is a deficient number, since it is larger than the sum of its proper divisors (379218646235).

1010256131365 is a wasteful number, since it uses less digits than its factorization.

1010256131365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10766.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 1010256131365 in words is "one trillion, ten billion, two hundred fifty-six million, one hundred thirty-one thousand, three hundred sixty-five".