78506653541351 has 8 divisors (see below), whose sum is σ = 89749488031104. Its totient is φ = 67270718619000.

The previous prime is 78506653541347. The next prime is 78506653541359. The reversal of 78506653541351 is 15314535660587.

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 78506653541351 - 2² = 78506653541347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78506653541359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1724867465 + ... + 1724912978.

It is an arithmetic number, because the mean of its divisors is an integer number (11218686003888).

Almost surely, 2^{78506653541351} is an apocalyptic number.

78506653541351 is a deficient number, since it is larger than the sum of its proper divisors (11242834489753).

78506653541351 is a wasteful number, since it uses less digits than its factorization.

78506653541351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449783701.

The product of its (nonzero) digits is 45360000, while the sum is 59.

The spelling of 78506653541351 in words is "seventy-eight trillion, five hundred six billion, six hundred fifty-three million, five hundred forty-one thousand, three hundred fifty-one".