1040728257577 has 4 divisors (see below), whose sum is σ = 1040808579840. Its totient is φ = 1040647935316.

The previous prime is 1040728257553. The next prime is 1040728257601. The reversal of 1040728257577 is 7757528270401.

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 an interprime number because it is at equal distance from previous prime (1040728257553) and next prime (1040728257601).

It is a cyclic number.

It is not a de Polignac number, because 1040728257577 - 2¹⁹ = 1040727733289 is a prime.

It is a super-2 number, since 2×1040728257577² (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 (1040728557577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40141693 + ... + 40167610.

It is an arithmetic number, because the mean of its divisors is an integer number (260202144960).

Almost surely, 2^{1040728257577} is an apocalyptic number.

It is an amenable number.

1040728257577 is a deficient number, since it is larger than the sum of its proper divisors (80322263).

1040728257577 is an equidigital number, since it uses as much as digits as its factorization.

1040728257577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80322262.

The product of its (nonzero) digits is 7683200, while the sum is 55.

The spelling of 1040728257577 in words is "one trillion, forty billion, seven hundred twenty-eight million, two hundred fifty-seven thousand, five hundred seventy-seven".