677101621111 has 4 divisors (see below), whose sum is σ = 677104154872. Its totient is φ = 677099087352.

The previous prime is 677101621109. The next prime is 677101621153. The reversal of 677101621111 is 111126101776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677101621111 - 2¹ = 677101621109 is a prime.

It is a super-2 number, since 2×677101621111² (a number of 24 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 (677101621711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811461 + ... + 1418686.

It is an arithmetic number, because the mean of its divisors is an integer number (169276038718).

Almost surely, 2^677101621111 is an apocalyptic number.

677101621111 is a deficient number, since it is larger than the sum of its proper divisors (2533761).

677101621111 is a wasteful number, since it uses less digits than its factorization.

677101621111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2533760.

The product of its (nonzero) digits is 3528, while the sum is 34.

Adding to 677101621111 its reverse (111126101776), we get a palindrome (788227722887).

The spelling of 677101621111 in words is "six hundred seventy-seven billion, one hundred one million, six hundred twenty-one thousand, one hundred eleven".