77071650651 has 12 divisors (see below), whose sum is σ = 111331251720. Its totient is φ = 51378546240.

The previous prime is 77071650599. The next prime is 77071650671. The reversal of 77071650651 is 15605617077.

77071650651 is a `hidden beast` number, since 7 + 70 + 71 + 6 + 506 + 5 + 1 = 666.

It is not a de Polignac number, because 77071650651 - 2¹⁷ = 77071519579 is a prime.

It is a super-3 number, since 3×77071650651³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77071650597 and 77071650606.

It is not an unprimeable number, because it can be changed into a prime (77071650671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11745 + ... + 392786.

It is an arithmetic number, because the mean of its divisors is an integer number (9277604310).

Almost surely, 2^77071650651 is an apocalyptic number.

77071650651 is a deficient number, since it is larger than the sum of its proper divisors (34259601069).

77071650651 is a wasteful number, since it uses less digits than its factorization.

77071650651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425706 (or 425703 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The spelling of 77071650651 in words is "seventy-seven billion, seventy-one million, six hundred fifty thousand, six hundred fifty-one".