7743777045644 has 6 divisors (see below), whose sum is σ = 13551609829884. Its totient is φ = 3871888522820.

The previous prime is 7743777045581. The next prime is 7743777045713. The reversal of 7743777045644 is 4465407773477.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 967972130702 + ... + 967972130709.

It is an arithmetic number, because the mean of its divisors is an integer number (2258601638314).

Almost surely, 2^{7743777045644} is an apocalyptic number.

It is an amenable number.

7743777045644 is a deficient number, since it is larger than the sum of its proper divisors (5807832784240).

7743777045644 is a wasteful number, since it uses less digits than its factorization.

7743777045644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935944261415 (or 1935944261413 counting only the distinct ones).

The product of its (nonzero) digits is 387233280, while the sum is 65.

The spelling of 7743777045644 in words is "seven trillion, seven hundred forty-three billion, seven hundred seventy-seven million, forty-five thousand, six hundred forty-four".