77427081346 has 8 divisors (see below), whose sum is σ = 116177027904. Its totient is φ = 38701405380.

The previous prime is 77427081313. The next prime is 77427081409. The reversal of 77427081346 is 64318072477.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 77427081346.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6059670 + ... + 6072433.

It is an arithmetic number, because the mean of its divisors is an integer number (14522128488).

Almost surely, 2^77427081346 is an apocalyptic number.

77427081346 is a deficient number, since it is larger than the sum of its proper divisors (38749946558).

77427081346 is a wasteful number, since it uses less digits than its factorization.

77427081346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12135296.

The product of its (nonzero) digits is 1580544, while the sum is 49.

The spelling of 77427081346 in words is "seventy-seven billion, four hundred twenty-seven million, eighty-one thousand, three hundred forty-six".