1081546993988 has 6 divisors (see below), whose sum is σ = 1892707239486. Its totient is φ = 540773496992.

The previous prime is 1081546993951. The next prime is 1081546994023. The reversal of 1081546993988 is 8893996451801.

It can be written as a sum of positive squares in only one way, i.e., 1067498107204 + 14048886784 = 1033198^2 + 118528^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135193374245 + ... + 135193374252.

It is an arithmetic number, because the mean of its divisors is an integer number (315451206581).

Almost surely, 2^{1081546993988} is an apocalyptic number.

It is an amenable number.

1081546993988 is a deficient number, since it is larger than the sum of its proper divisors (811160245498).

1081546993988 is a wasteful number, since it uses less digits than its factorization.

1081546993988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270386748501 (or 270386748499 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 71.

The spelling of 1081546993988 in words is "one trillion, eighty-one billion, five hundred forty-six million, nine hundred ninety-three thousand, nine hundred eighty-eight".