77011101010001 has 8 divisors (see below), whose sum is σ = 77027577081000. Its totient is φ = 76994625951360.

The previous prime is 77011101009961. The next prime is 77011101010043. The reversal of 77011101010001 is 10001010111077.

It can be written as a sum of positive squares in 4 ways, for example, as 46104439500625 + 30906661509376 = 6790025^2 + 5559376^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77011101010001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77011101310001) 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, 163065515 + ... + 163537103.

It is an arithmetic number, because the mean of its divisors is an integer number (9628447135125).

Almost surely, 2^{77011101010001} is an apocalyptic number.

It is an amenable number.

77011101010001 is a deficient number, since it is larger than the sum of its proper divisors (16476070999).

77011101010001 is a wasteful number, since it uses less digits than its factorization.

77011101010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506179.

The product of its (nonzero) digits is 49, while the sum is 20.

Adding to 77011101010001 its reverse (10001010111077), we get a palindrome (87012111121078).

The spelling of 77011101010001 in words is "seventy-seven trillion, eleven billion, one hundred one million, ten thousand, one".