1551056056007 has 4 divisors (see below), whose sum is σ = 1584057248736. Its totient is φ = 1518054863280.

The previous prime is 1551056055971. The next prime is 1551056056051. The reversal of 1551056056007 is 7006506501551.

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

It is a cyclic number.

It is not a de Polignac number, because 1551056056007 - 2²² = 1551051861703 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 (1551056086007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16500596294 + ... + 16500596387.

It is an arithmetic number, because the mean of its divisors is an integer number (396014312184).

Almost surely, 2^{1551056056007} is an apocalyptic number.

1551056056007 is a deficient number, since it is larger than the sum of its proper divisors (33001192729).

1551056056007 is an equidigital number, since it uses as much as digits as its factorization.

1551056056007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33001192728.

The product of its (nonzero) digits is 157500, while the sum is 41.

The spelling of 1551056056007 in words is "one trillion, five hundred fifty-one billion, fifty-six million, fifty-six thousand, seven".