1078940337921 has 6 divisors (see below), whose sum is σ = 1558469377010. Its totient is φ = 719293558608.

The previous prime is 1078940337907. The next prime is 1078940337967. The reversal of 1078940337921 is 1297330498701.

1078940337921 is a `hidden beast` number, since 107 + 89 + 40 + 337 + 92 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 838526635521 + 240413702400 = 915711^2 + 490320^2 .

It is not a de Polignac number, because 1078940337921 - 2⁷ = 1078940337793 is a prime.

It is a super-2 number, since 2×1078940337921² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1078940337821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59941129876 + ... + 59941129893.

Almost surely, 2^{1078940337921} is an apocalyptic number.

It is an amenable number.

1078940337921 is a deficient number, since it is larger than the sum of its proper divisors (479529039089).

1078940337921 is a wasteful number, since it uses less digits than its factorization.

1078940337921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119882259775 (or 119882259772 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 1078940337921 in words is "one trillion, seventy-eight billion, nine hundred forty million, three hundred thirty-seven thousand, nine hundred twenty-one".