7981103946645 has 48 divisors (see below), whose sum is σ = 14654766147840. Its totient is φ = 4006872634752.

The previous prime is 7981103946623. The next prime is 7981103946667. The reversal of 7981103946645 is 5466493011897.

7981103946645 is a `hidden beast` number, since 7 + 98 + 1 + 10 + 39 + 466 + 45 = 666.

It is an interprime number because it is at equal distance from previous prime (7981103946623) and next prime (7981103946667).

It is not a de Polignac number, because 7981103946645 - 2⁶ = 7981103946581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29593869 + ... + 29862338.

It is an arithmetic number, because the mean of its divisors is an integer number (305307628080).

Almost surely, 2^{7981103946645} is an apocalyptic number.

It is an amenable number.

7981103946645 is a deficient number, since it is larger than the sum of its proper divisors (6673662201195).

7981103946645 is a wasteful number, since it uses less digits than its factorization.

7981103946645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59456394 (or 59456391 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 7981103946645 in words is "seven trillion, nine hundred eighty-one billion, one hundred three million, nine hundred forty-six thousand, six hundred forty-five".