78486057111 has 16 divisors (see below), whose sum is σ = 130470329088. Its totient is φ = 40771977600.

The previous prime is 78486057059. The next prime is 78486057161. The reversal of 78486057111 is 11175068487.

It is not a de Polignac number, because 78486057111 - 2¹⁰ = 78486056087 is a prime.

It is a super-2 number, since 2×78486057111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78486057161) 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, 169883010 + ... + 169883471.

It is an arithmetic number, because the mean of its divisors is an integer number (8154395568).

Almost surely, 2^78486057111 is an apocalyptic number.

78486057111 is a deficient number, since it is larger than the sum of its proper divisors (51984271977).

78486057111 is a wasteful number, since it uses less digits than its factorization.

78486057111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339766502.

The product of its (nonzero) digits is 376320, while the sum is 48.

The spelling of 78486057111 in words is "seventy-eight billion, four hundred eighty-six million, fifty-seven thousand, one hundred eleven".