1553055042661 has 8 divisors (see below), whose sum is σ = 1567575317120. Its totient is φ = 1538595650592.

The previous prime is 1553055042641. The next prime is 1553055042697. The reversal of 1553055042661 is 1662405503551.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1553055042661 - 2²⁹ = 1552518171749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1553055042641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15169341 + ... + 15271378.

It is an arithmetic number, because the mean of its divisors is an integer number (195946914640).

Almost surely, 2^{1553055042661} is an apocalyptic number.

It is an amenable number.

1553055042661 is a deficient number, since it is larger than the sum of its proper divisors (14520274459).

1553055042661 is a wasteful number, since it uses less digits than its factorization.

1553055042661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30441195.

The product of its (nonzero) digits is 540000, while the sum is 43.

The spelling of 1553055042661 in words is "one trillion, five hundred fifty-three billion, fifty-five million, forty-two thousand, six hundred sixty-one".