78148471450765 has 8 divisors (see below), whose sum is σ = 93779493959520. Its totient is φ = 62517891681552.

The previous prime is 78148471450729. The next prime is 78148471450811. The reversal of 78148471450765 is 56705417484187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78148471450765 - 2¹⁷ = 78148471319693 is a prime.

It is a super-2 number, since 2×78148471450765² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78148471450765.

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, 110296435 + ... + 111002704.

It is an arithmetic number, because the mean of its divisors is an integer number (11722436744940).

Almost surely, 2^{78148471450765} is an apocalyptic number.

It is an amenable number.

78148471450765 is a deficient number, since it is larger than the sum of its proper divisors (15631022508755).

78148471450765 is a wasteful number, since it uses less digits than its factorization.

78148471450765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221369771.

The product of its (nonzero) digits is 210739200, while the sum is 67.

The spelling of 78148471450765 in words is "seventy-eight trillion, one hundred forty-eight billion, four hundred seventy-one million, four hundred fifty thousand, seven hundred sixty-five".