1551567740351 has 2 divisors, whose sum is σ = 1551567740352. Its totient is φ = 1551567740350.

The previous prime is 1551567740321. The next prime is 1551567740383. The reversal of 1551567740351 is 1530477651551.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1551567740351 - 2¹⁸ = 1551567478207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1551567740351.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551567740321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775783870175 + 775783870176.

It is an arithmetic number, because the mean of its divisors is an integer number (775783870176).

Almost surely, 2^{1551567740351} is an apocalyptic number.

1551567740351 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551567740351 is an equidigital number, since it uses as much as digits as its factorization.

1551567740351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2205000, while the sum is 50.

The spelling of 1551567740351 in words is "one trillion, five hundred fifty-one billion, five hundred sixty-seven million, seven hundred forty thousand, three hundred fifty-one".