766212077774477 has 8 divisors (see below), whose sum is σ = 785438559313056. Its totient is φ = 747049577872752.

The previous prime is 766212077774287. The next prime is 766212077774501. The reversal of 766212077774477 is 774477770212667.

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 766212077774477 - 2¹⁴ = 766212077758093 is a prime.

It is a super-2 number, since 2×766212077774477² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766212077771477) 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, 15995384963 + ... + 15995432864.

It is an arithmetic number, because the mean of its divisors is an integer number (98179819914132).

Almost surely, 2^{766212077774477} is an apocalyptic number.

It is an amenable number.

766212077774477 is a deficient number, since it is larger than the sum of its proper divisors (19226481538579).

766212077774477 is a wasteful number, since it uses less digits than its factorization.

766212077774477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31990818427.

The product of its (nonzero) digits is 1897443072, while the sum is 74.

The spelling of 766212077774477 in words is "seven hundred sixty-six trillion, two hundred twelve billion, seventy-seven million, seven hundred seventy-four thousand, four hundred seventy-seven".