1126321681155 has 64 divisors (see below), whose sum is σ = 1999759435776. Its totient is φ = 536716224000.

The previous prime is 1126321681153. The next prime is 1126321681189. The reversal of 1126321681155 is 5511861236211.

It is a happy number.

It is not a de Polignac number, because 1126321681155 - 2¹ = 1126321681153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1126321681153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12809190 + ... + 12896820.

It is an arithmetic number, because the mean of its divisors is an integer number (31246241184).

Almost surely, 2^{1126321681155} is an apocalyptic number.

1126321681155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1126321681155 is a deficient number, since it is larger than the sum of its proper divisors (873437754621).

1126321681155 is a wasteful number, since it uses less digits than its factorization.

1126321681155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88988.

The product of its digits is 86400, while the sum is 42.

The spelling of 1126321681155 in words is "one trillion, one hundred twenty-six billion, three hundred twenty-one million, six hundred eighty-one thousand, one hundred fifty-five".