11072420077 has 4 divisors (see below), whose sum is σ = 11072672380. Its totient is φ = 11072167776.

The previous prime is 11072420039. The next prime is 11072420101. The reversal of 11072420077 is 77002427011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5117828521 + 5954591556 = 71539^2 + 77166^2 .

It is a cyclic number.

It is not a de Polignac number, because 11072420077 - 2¹⁵ = 11072387309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11072429077) 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, 41298 + ... + 154435.

It is an arithmetic number, because the mean of its divisors is an integer number (2768168095).

Almost surely, 2^11072420077 is an apocalyptic number.

It is an amenable number.

11072420077 is a deficient number, since it is larger than the sum of its proper divisors (252303).

11072420077 is an equidigital number, since it uses as much as digits as its factorization.

11072420077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252302.

The product of its (nonzero) digits is 5488, while the sum is 31.

Adding to 11072420077 its reverse (77002427011), we get a palindrome (88074847088).

The spelling of 11072420077 in words is "eleven billion, seventy-two million, four hundred twenty thousand, seventy-seven".