76478862646 has 16 divisors (see below), whose sum is σ = 115243655904. Its totient is φ = 38064405184.

The previous prime is 76478862617. The next prime is 76478862653. The reversal of 76478862646 is 64626887467.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1747791 + ... + 1791013.

It is an arithmetic number, because the mean of its divisors is an integer number (7202728494).

Almost surely, 2^76478862646 is an apocalyptic number.

76478862646 is a deficient number, since it is larger than the sum of its proper divisors (38764793258).

76478862646 is a wasteful number, since it uses less digits than its factorization.

76478862646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47255.

The product of its digits is 130056192, while the sum is 64.

The spelling of 76478862646 in words is "seventy-six billion, four hundred seventy-eight million, eight hundred sixty-two thousand, six hundred forty-six".