1121565660650 has 24 divisors (see below), whose sum is σ = 2094840653760. Its totient is φ = 446749162160.

The previous prime is 1121565660619. The next prime is 1121565660739. The reversal of 1121565660650 is 560665651211.

It is a happy number.

It is a super-2 number, since 2×1121565660650² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46915484 + ... + 46939383.

It is an arithmetic number, because the mean of its divisors is an integer number (87285027240).

Almost surely, 2^{1121565660650} is an apocalyptic number.

1121565660650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121565660650 is a deficient number, since it is larger than the sum of its proper divisors (973274993110).

1121565660650 is a wasteful number, since it uses less digits than its factorization.

1121565660650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93855118 (or 93855113 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 1121565660650 in words is "one trillion, one hundred twenty-one billion, five hundred sixty-five million, six hundred sixty thousand, six hundred fifty".