10816121477 has 6 divisors (see below), whose sum is σ = 12582018918. Its totient is φ = 9270961224.

The previous prime is 10816121471. The next prime is 10816121527. The reversal of 10816121477 is 77412161801.

It can be written as a sum of positive squares in only one way, i.e., 10815792001 + 329476 = 103999^2 + 574^2 .

It is not a de Polignac number, because 10816121477 - 2⁶ = 10816121413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10816121477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10816121471) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110368538 + ... + 110368635.

It is an arithmetic number, because the mean of its divisors is an integer number (2097003153).

Almost surely, 2^10816121477 is an apocalyptic number.

It is an amenable number.

10816121477 is a deficient number, since it is larger than the sum of its proper divisors (1765897441).

10816121477 is an equidigital number, since it uses as much as digits as its factorization.

10816121477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220737187 (or 220737180 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 38.

The spelling of 10816121477 in words is "ten billion, eight hundred sixteen million, one hundred twenty-one thousand, four hundred seventy-seven".