77077701669 has 8 divisors (see below), whose sum is σ = 102782667712. Its totient is φ = 51378935040.

The previous prime is 77077701643. The next prime is 77077701689. The reversal of 77077701669 is 96610777077.

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

It is not a de Polignac number, because 77077701669 - 2¹⁹ = 77077177381 is a prime.

It is a super-2 number, since 2×77077701669² (a number of 23 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 (77077701689) 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, 1520764 + ... + 1570629.

It is an arithmetic number, because the mean of its divisors is an integer number (12847833464).

Almost surely, 2^77077701669 is an apocalyptic number.

It is an amenable number.

77077701669 is a deficient number, since it is larger than the sum of its proper divisors (25704966043).

77077701669 is a wasteful number, since it uses less digits than its factorization.

77077701669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099707.

The product of its (nonzero) digits is 5445468, while the sum is 57.

The spelling of 77077701669 in words is "seventy-seven billion, seventy-seven million, seven hundred one thousand, six hundred sixty-nine".