30255552552749 has 4 divisors (see below), whose sum is σ = 30255675445980. Its totient is φ = 30255429659520.

The previous prime is 30255552552689. The next prime is 30255552552793. The reversal of 30255552552749 is 94725525555203.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17034547507849 + 13221005044900 = 4127293^2 + 3636070^2 .

It is a cyclic number.

It is not a de Polignac number, because 30255552552749 - 2¹² = 30255552548653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30255552752749) 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, 61076582 + ... + 61569959.

It is an arithmetic number, because the mean of its divisors is an integer number (7563918861495).

Almost surely, 2^{30255552552749} is an apocalyptic number.

It is an amenable number.

30255552552749 is a deficient number, since it is larger than the sum of its proper divisors (122893231).

30255552552749 is a wasteful number, since it uses less digits than its factorization.

30255552552749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122893230.

The product of its (nonzero) digits is 94500000, while the sum is 59.

The spelling of 30255552552749 in words is "thirty trillion, two hundred fifty-five billion, five hundred fifty-two million, five hundred fifty-two thousand, seven hundred forty-nine".