78286550340886 has 16 divisors (see below), whose sum is σ = 117937737707328. Its totient is φ = 38974027996800.

The previous prime is 78286550340853. The next prime is 78286550340917. The reversal of 78286550340886 is 68804305568287.

It is a super-2 number, since 2×78286550340886² (a number of 29 digits) contains 22 as substring.

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, 11467245 + ... + 16972648.

It is an arithmetic number, because the mean of its divisors is an integer number (7371108606708).

Almost surely, 2^{78286550340886} is an apocalyptic number.

78286550340886 is a deficient number, since it is larger than the sum of its proper divisors (39651187366442).

78286550340886 is a wasteful number, since it uses less digits than its factorization.

78286550340886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28445847.

The product of its (nonzero) digits is 619315200, while the sum is 70.

The spelling of 78286550340886 in words is "seventy-eight trillion, two hundred eighty-six billion, five hundred fifty million, three hundred forty thousand, eight hundred eighty-six".