1653341557121 has 48 divisors (see below), whose sum is σ = 1847118753792. Its totient is φ = 1471961272320.

The previous prime is 1653341557117. The next prime is 1653341557123. The reversal of 1653341557121 is 1217551433561.

It is not a de Polignac number, because 1653341557121 - 2² = 1653341557117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1653341557123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4316818496 + ... + 4316818878.

It is an arithmetic number, because the mean of its divisors is an integer number (38481640704).

Almost surely, 2^{1653341557121} is an apocalyptic number.

It is an amenable number.

1653341557121 is a deficient number, since it is larger than the sum of its proper divisors (193777196671).

1653341557121 is a wasteful number, since it uses less digits than its factorization.

1653341557121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122 (or 941 counting only the distinct ones).

The product of its digits is 378000, while the sum is 44.

The spelling of 1653341557121 in words is "one trillion, six hundred fifty-three billion, three hundred forty-one million, five hundred fifty-seven thousand, one hundred twenty-one".