78104667649536 has 120 divisors (see below), whose sum is σ = 245907664712424. Its totient is φ = 23668081090560.

The previous prime is 78104667649501. The next prime is 78104667649571. The reversal of 78104667649536 is 63594676640187.

78104667649536 is a `hidden beast` number, since 7 + 8 + 1 + 0 + 4 + 66 + 76 + 495 + 3 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (78104667649501) and next prime (78104667649571).

It is a super-2 number, since 2×78104667649536² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770394661 + ... + 770496036.

Almost surely, 2^{78104667649536} is an apocalyptic number.

It is an amenable number.

78104667649536 is an abundant number, since it is smaller than the sum of its proper divisors (167802997062888).

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

78104667649536 is a wasteful number, since it uses less digits than its factorization.

78104667649536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540890732 (or 1540890713 counting only the distinct ones).

The product of its (nonzero) digits is 1097349120, while the sum is 72.

The spelling of 78104667649536 in words is "seventy-eight trillion, one hundred four billion, six hundred sixty-seven million, six hundred forty-nine thousand, five hundred thirty-six".