1551666067113 has 4 divisors (see below), whose sum is σ = 2068888089488. Its totient is φ = 1034444044740.

The previous prime is 1551666067111. The next prime is 1551666067117. The reversal of 1551666067113 is 3117606661551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1551666067113 - 2¹ = 1551666067111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551666067111) 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, 258611011183 + ... + 258611011188.

It is an arithmetic number, because the mean of its divisors is an integer number (517222022372).

Almost surely, 2^{1551666067113} is an apocalyptic number.

It is an amenable number.

1551666067113 is a deficient number, since it is larger than the sum of its proper divisors (517222022375).

1551666067113 is an equidigital number, since it uses as much as digits as its factorization.

1551666067113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517222022374.

The product of its (nonzero) digits is 680400, while the sum is 48.

The spelling of 1551666067113 in words is "one trillion, five hundred fifty-one billion, six hundred sixty-six million, sixty-seven thousand, one hundred thirteen".