8074778771964 has 24 divisors (see below), whose sum is σ = 18841426450000. Its totient is φ = 2691553497984.

The previous prime is 8074778771933. The next prime is 8074778771971. The reversal of 8074778771964 is 4691778774708.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4068889 + ... + 5718864.

Almost surely, 2^{8074778771964} is an apocalyptic number.

It is an amenable number.

8074778771964 is an abundant number, since it is smaller than the sum of its proper divisors (10766647678036).

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

8074778771964 is a wasteful number, since it uses less digits than its factorization.

8074778771964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9856509 (or 9856507 counting only the distinct ones).

The product of its (nonzero) digits is 929359872, while the sum is 75.

The spelling of 8074778771964 in words is "eight trillion, seventy-four billion, seven hundred seventy-eight million, seven hundred seventy-one thousand, nine hundred sixty-four".