1079521677657 has 12 divisors (see below), whose sum is σ = 1641377989680. Its totient is φ = 681803164728.

The previous prime is 1079521677649. The next prime is 1079521677667. The reversal of 1079521677657 is 7567761259701.

It is not a de Polignac number, because 1079521677657 - 2³ = 1079521677649 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1079521677594 and 1079521677603.

It is not an unprimeable number, because it can be changed into a prime (1079521677667) 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 11 ways as a sum of consecutive naturals, for example, 3156495963 + ... + 3156496304.

It is an arithmetic number, because the mean of its divisors is an integer number (136781499140).

Almost surely, 2^{1079521677657} is an apocalyptic number.

It is an amenable number.

1079521677657 is a deficient number, since it is larger than the sum of its proper divisors (561856312023).

1079521677657 is a wasteful number, since it uses less digits than its factorization.

1079521677657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6312992292 (or 6312992289 counting only the distinct ones).

The product of its (nonzero) digits is 38896200, while the sum is 63.

The spelling of 1079521677657 in words is "one trillion, seventy-nine billion, five hundred twenty-one million, six hundred seventy-seven thousand, six hundred fifty-seven".