77927937931886 has 16 divisors (see below), whose sum is σ = 133752287339136. Its totient is φ = 33357303535416.

The previous prime is 77927937931853. The next prime is 77927937931999. The reversal of 77927937931886 is 68813973972977.

It is a super-3 number, since 3×77927937931886³ (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77927937931798 and 77927937931807.

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, 3365333816 + ... + 3365356971.

It is an arithmetic number, because the mean of its divisors is an integer number (8359517958696).

Almost surely, 2^{77927937931886} is an apocalyptic number.

77927937931886 is a deficient number, since it is larger than the sum of its proper divisors (55824349407250).

77927937931886 is a wasteful number, since it uses less digits than its factorization.

77927937931886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6730691623.

The product of its digits is 12098274048, while the sum is 86.

The spelling of 77927937931886 in words is "seventy-seven trillion, nine hundred twenty-seven billion, nine hundred thirty-seven million, nine hundred thirty-one thousand, eight hundred eighty-six".