1107778812761 has 8 divisors (see below), whose sum is σ = 1156012756800. Its totient is φ = 1059550672752.

The previous prime is 1107778812739. The next prime is 1107778812797. The reversal of 1107778812761 is 1672188777011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1107778812761 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1107778812697 and 1107778812706.

It is not an unprimeable number, because it can be changed into a prime (1107778892761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058711 + ... + 1826588.

It is an arithmetic number, because the mean of its divisors is an integer number (144501594600).

Almost surely, 2^{1107778812761} is an apocalyptic number.

It is an amenable number.

1107778812761 is a deficient number, since it is larger than the sum of its proper divisors (48233944039).

1107778812761 is a wasteful number, since it uses less digits than its factorization.

1107778812761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902015.

The product of its (nonzero) digits is 1843968, while the sum is 56.

The spelling of 1107778812761 in words is "one trillion, one hundred seven billion, seven hundred seventy-eight million, eight hundred twelve thousand, seven hundred sixty-one".