1087011253645 has 4 divisors (see below), whose sum is σ = 1304413504380. Its totient is φ = 869609002912.

The previous prime is 1087011253607. The next prime is 1087011253649. The reversal of 1087011253645 is 5463521107801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 863299281321 + 223711972324 = 929139^2 + 472982^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087011253645 - 2¹⁵ = 1087011220877 is a prime.

It is a super-3 number, since 3×1087011253645³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087011253649) 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, 108701125360 + ... + 108701125369.

It is an arithmetic number, because the mean of its divisors is an integer number (326103376095).

Almost surely, 2^{1087011253645} is an apocalyptic number.

It is an amenable number.

1087011253645 is a deficient number, since it is larger than the sum of its proper divisors (217402250735).

1087011253645 is an equidigital number, since it uses as much as digits as its factorization.

1087011253645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217402250734.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 1087011253645 in words is "one trillion, eighty-seven billion, eleven million, two hundred fifty-three thousand, six hundred forty-five".