7430138649553 has 4 divisors (see below), whose sum is σ = 7459049695140. Its totient is φ = 7401227603968.

The previous prime is 7430138649487. The next prime is 7430138649581. The reversal of 7430138649553 is 3559468310347.

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 7111971581584 + 318167067969 = 2666828^2 + 564063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7430138649553 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7430138649653) 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, 14455522408 + ... + 14455522921.

It is an arithmetic number, because the mean of its divisors is an integer number (1864762423785).

Almost surely, 2^{7430138649553} is an apocalyptic number.

It is an amenable number.

7430138649553 is a deficient number, since it is larger than the sum of its proper divisors (28911045587).

7430138649553 is a wasteful number, since it uses less digits than its factorization.

7430138649553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28911045586.

The product of its (nonzero) digits is 32659200, while the sum is 58.

The spelling of 7430138649553 in words is "seven trillion, four hundred thirty billion, one hundred thirty-eight million, six hundred forty-nine thousand, five hundred fifty-three".