11111010078 has 64 divisors (see below), whose sum is σ = 25697986560. Its totient is φ = 3137126112.

The previous prime is 11111010077. The next prime is 11111010103. The reversal of 11111010078 is 87001011111.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111010077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1220901 + ... + 1229967.

It is an arithmetic number, because the mean of its divisors is an integer number (401531040).

Almost surely, 2^11111010078 is an apocalyptic number.

11111010078 is an abundant number, since it is smaller than the sum of its proper divisors (14586976482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11111010078 is a wasteful number, since it uses less digits than its factorization.

11111010078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421.

The product of its (nonzero) digits is 56, while the sum is 21.

Adding to 11111010078 its reverse (87001011111), we get a palindrome (98112021189).

The spelling of 11111010078 in words is "eleven billion, one hundred eleven million, ten thousand, seventy-eight".