1121463601651 has 4 divisors (see below), whose sum is σ = 1121471661600. Its totient is φ = 1121455541704.

The previous prime is 1121463601589. The next prime is 1121463601721. The reversal of 1121463601651 is 1561063641211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1121463601651 - 2¹⁹ = 1121463077363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1121463601651.

It is not an unprimeable number, because it can be changed into a prime (1121463605651) 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, 3817531 + ... + 4100788.

It is an arithmetic number, because the mean of its divisors is an integer number (280367915400).

Almost surely, 2^{1121463601651} is an apocalyptic number.

1121463601651 is a deficient number, since it is larger than the sum of its proper divisors (8059949).

1121463601651 is an equidigital number, since it uses as much as digits as its factorization.

1121463601651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8059948.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 1121463601651 in words is "one trillion, one hundred twenty-one billion, four hundred sixty-three million, six hundred one thousand, six hundred fifty-one".