1551425561011 has 4 divisors (see below), whose sum is σ = 1552320788112. Its totient is φ = 1550530333912.

The previous prime is 1551425560933. The next prime is 1551425561083. The reversal of 1551425561011 is 1101655241551.

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 1551425561011 - 2¹³ = 1551425552819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551425561311) 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, 447610951 + ... + 447614416.

It is an arithmetic number, because the mean of its divisors is an integer number (388080197028).

Almost surely, 2^{1551425561011} is an apocalyptic number.

1551425561011 is a deficient number, since it is larger than the sum of its proper divisors (895227101).

1551425561011 is an equidigital number, since it uses as much as digits as its factorization.

1551425561011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895227100.

The product of its (nonzero) digits is 30000, while the sum is 37.

The spelling of 1551425561011 in words is "one trillion, five hundred fifty-one billion, four hundred twenty-five million, five hundred sixty-one thousand, eleven".