78540180777771 has 8 divisors (see below), whose sum is σ = 104720457311184. Its totient is φ = 52360012381440.

The previous prime is 78540180777767. The next prime is 78540180777787. The reversal of 78540180777771 is 17777708104587.

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

It is not a de Polignac number, because 78540180777771 - 2² = 78540180777767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78540180777696 and 78540180777705.

It is not an unprimeable number, because it can be changed into a prime (78540180770771) 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, 25324110 + ... + 28255811.

It is an arithmetic number, because the mean of its divisors is an integer number (13090057163898).

Almost surely, 2^{78540180777771} is an apocalyptic number.

78540180777771 is a deficient number, since it is larger than the sum of its proper divisors (26180276533413).

78540180777771 is a wasteful number, since it uses less digits than its factorization.

78540180777771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54068541.

The product of its (nonzero) digits is 150590720, while the sum is 69.

The spelling of 78540180777771 in words is "seventy-eight trillion, five hundred forty billion, one hundred eighty million, seven hundred seventy-seven thousand, seven hundred seventy-one".