77764280472068 has 24 divisors (see below), whose sum is σ = 136133632220544. Its totient is φ = 38868959052000.

The previous prime is 77764280472001. The next prime is 77764280472079. The reversal of 77764280472068 is 86027408246777.

It is a super-3 number, since 3×77764280472068³ (a number of 43 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77764280471989 and 77764280472007.

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, 153766418 + ... + 154271318.

It is an arithmetic number, because the mean of its divisors is an integer number (5672234675856).

Almost surely, 2^{77764280472068} is an apocalyptic number.

It is an amenable number.

77764280472068 is a deficient number, since it is larger than the sum of its proper divisors (58369351748476).

77764280472068 is a wasteful number, since it uses less digits than its factorization.

77764280472068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517883 (or 517881 counting only the distinct ones).

The product of its (nonzero) digits is 354041856, while the sum is 68.

The spelling of 77764280472068 in words is "seventy-seven trillion, seven hundred sixty-four billion, two hundred eighty million, four hundred seventy-two thousand, sixty-eight".