1077635604561 has 4 divisors (see below), whose sum is σ = 1436847472752. Its totient is φ = 718423736372.

The previous prime is 1077635604527. The next prime is 1077635604569. The reversal of 1077635604561 is 1654065367701.

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 1077635604561 - 2⁶ = 1077635604497 is a prime.

It is a super-2 number, since 2×1077635604561² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1077635604569) 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, 179605934091 + ... + 179605934096.

It is an arithmetic number, because the mean of its divisors is an integer number (359211868188).

Almost surely, 2^{1077635604561} is an apocalyptic number.

It is an amenable number.

1077635604561 is a deficient number, since it is larger than the sum of its proper divisors (359211868191).

1077635604561 is an equidigital number, since it uses as much as digits as its factorization.

1077635604561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359211868190.

The product of its (nonzero) digits is 3175200, while the sum is 51.

The spelling of 1077635604561 in words is "one trillion, seventy-seven billion, six hundred thirty-five million, six hundred four thousand, five hundred sixty-one".