77454487061 has 8 divisors (see below), whose sum is σ = 88832205504. Its totient is φ = 66154966560.

The previous prime is 77454487057. The next prime is 77454487079. The reversal of 77454487061 is 16078445477.

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

It is a cyclic number.

It is not a de Polignac number, because 77454487061 - 2² = 77454487057 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77454486994 and 77454487012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77454487021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19547360 + ... + 19551321.

It is an arithmetic number, because the mean of its divisors is an integer number (11104025688).

Almost surely, 2^77454487061 is an apocalyptic number.

It is an amenable number.

77454487061 is a deficient number, since it is larger than the sum of its proper divisors (11377718443).

77454487061 is a wasteful number, since it uses less digits than its factorization.

77454487061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39098971.

The product of its (nonzero) digits is 5268480, while the sum is 53.

The spelling of 77454487061 in words is "seventy-seven billion, four hundred fifty-four million, four hundred eighty-seven thousand, sixty-one".