78504387040761 has 16 divisors (see below), whose sum is σ = 114188347822080. Its totient is φ = 47578354517520.

The previous prime is 78504387040757. The next prime is 78504387040907. The reversal of 78504387040761 is 16704078340587.

It is not a de Polignac number, because 78504387040761 - 2² = 78504387040757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78504387040695 and 78504387040704.

It is not an unprimeable number, because it can be changed into a prime (78504387040711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46366236 + ... + 48029538.

It is an arithmetic number, because the mean of its divisors is an integer number (7136771738880).

Almost surely, 2^{78504387040761} is an apocalyptic number.

It is an amenable number.

78504387040761 is a deficient number, since it is larger than the sum of its proper divisors (35683960781319).

78504387040761 is a wasteful number, since it uses less digits than its factorization.

78504387040761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3093556.

The product of its (nonzero) digits is 31610880, while the sum is 60.

The spelling of 78504387040761 in words is "seventy-eight trillion, five hundred four billion, three hundred eighty-seven million, forty thousand, seven hundred sixty-one".