11278401055 has 8 divisors (see below), whose sum is σ = 13534938000. Its totient is φ = 9022149696.

The previous prime is 11278401041. The next prime is 11278401061. The reversal of 11278401055 is 55010487211.

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

It is a cyclic number.

It is not a de Polignac number, because 11278401055 - 2¹⁹ = 11277876767 is a prime.

It is a super-2 number, since 2×11278401055² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11278401055.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28096 + ... + 152794.

It is an arithmetic number, because the mean of its divisors is an integer number (1691867250).

Almost surely, 2^11278401055 is an apocalyptic number.

11278401055 is a deficient number, since it is larger than the sum of its proper divisors (2256536945).

11278401055 is a wasteful number, since it uses less digits than its factorization.

11278401055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142793.

The product of its (nonzero) digits is 11200, while the sum is 34.

Adding to 11278401055 its reverse (55010487211), we get a palindrome (66288888266).

The spelling of 11278401055 in words is "eleven billion, two hundred seventy-eight million, four hundred one thousand, fifty-five".