78462703674640 has 80 divisors (see below), whose sum is σ = 186323804513280. Its totient is φ = 30714573770240.

The previous prime is 78462703674623. The next prime is 78462703674643. The reversal of 78462703674640 is 4647630726487.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (78462703674643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41483970 + ... + 43334110.

It is an arithmetic number, because the mean of its divisors is an integer number (2329047556416).

Almost surely, 2^{78462703674640} is an apocalyptic number.

It is an amenable number.

78462703674640 is an abundant number, since it is smaller than the sum of its proper divisors (107861100838640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78462703674640 is a wasteful number, since it uses less digits than its factorization.

78462703674640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861480 (or 1861474 counting only the distinct ones).

The product of its (nonzero) digits is 227598336, while the sum is 64.

The spelling of 78462703674640 in words is "seventy-eight trillion, four hundred sixty-two billion, seven hundred three million, six hundred seventy-four thousand, six hundred forty".