7402078685663 has 2 divisors, whose sum is σ = 7402078685664. Its totient is φ = 7402078685662.

The previous prime is 7402078685627. The next prime is 7402078685717. The reversal of 7402078685663 is 3665868702047.

It is a weak prime.

It is an emirp because it is prime and its reverse (3665868702047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7402078685663 - 2²⁸ = 7401810250207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7402078685596 and 7402078685605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7402078685263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3701039342831 + 3701039342832.

It is an arithmetic number, because the mean of its divisors is an integer number (3701039342832).

Almost surely, 2^{7402078685663} is an apocalyptic number.

7402078685663 is a deficient number, since it is larger than the sum of its proper divisors (1).

7402078685663 is an equidigital number, since it uses as much as digits as its factorization.

7402078685663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 62.

The spelling of 7402078685663 in words is "seven trillion, four hundred two billion, seventy-eight million, six hundred eighty-five thousand, six hundred sixty-three".