1097077790557 has 64 divisors (see below), whose sum is σ = 1339848622080. Its totient is φ = 878608684800.

The previous prime is 1097077790539. The next prime is 1097077790569. The reversal of 1097077790557 is 7550977707901.

It is not a de Polignac number, because 1097077790557 - 2⁷ = 1097077790429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097077790857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 251794423 + ... + 251798779.

It is an arithmetic number, because the mean of its divisors is an integer number (20935134720).

Almost surely, 2^{1097077790557} is an apocalyptic number.

It is an amenable number.

1097077790557 is a deficient number, since it is larger than the sum of its proper divisors (242770831523).

1097077790557 is a wasteful number, since it uses less digits than its factorization.

1097077790557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4802.

The product of its (nonzero) digits is 34034175, while the sum is 64.

The spelling of 1097077790557 in words is "one trillion, ninety-seven billion, seventy-seven million, seven hundred ninety thousand, five hundred fifty-seven".