1551551234347 has 2 divisors, whose sum is σ = 1551551234348. Its totient is φ = 1551551234346.

The previous prime is 1551551234297. The next prime is 1551551234371. The reversal of 1551551234347 is 7434321551551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1551551234347 - 2²³ = 1551542845739 is a prime.

It is a super-2 number, since 2×1551551234347² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1551551234297 and 1551551234306.

It is not a weakly prime, because it can be changed into another prime (1551551234047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775775617173 + 775775617174.

It is an arithmetic number, because the mean of its divisors is an integer number (775775617174).

Almost surely, 2^{1551551234347} is an apocalyptic number.

1551551234347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551551234347 is an equidigital number, since it uses as much as digits as its factorization.

1551551234347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260000, while the sum is 46.

Adding to 1551551234347 its reverse (7434321551551), we get a palindrome (8985872785898).

The spelling of 1551551234347 in words is "one trillion, five hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-four thousand, three hundred forty-seven".