1078207277761 has 4 divisors (see below), whose sum is σ = 1078210522800. Its totient is φ = 1078204032724.

The previous prime is 1078207277753. The next prime is 1078207277773. The reversal of 1078207277761 is 1677727028701.

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 1078207277761 - 2³ = 1078207277753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078207271761) 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, 1058851 + ... + 1810408.

It is an arithmetic number, because the mean of its divisors is an integer number (269552630700).

Almost surely, 2^{1078207277761} is an apocalyptic number.

It is an amenable number.

1078207277761 is a deficient number, since it is larger than the sum of its proper divisors (3245039).

1078207277761 is an equidigital number, since it uses as much as digits as its factorization.

1078207277761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3245038.

The product of its (nonzero) digits is 3226944, while the sum is 55.

The spelling of 1078207277761 in words is "one trillion, seventy-eight billion, two hundred seven million, two hundred seventy-seven thousand, seven hundred sixty-one".