1551680773453 has 2 divisors, whose sum is σ = 1551680773454. Its totient is φ = 1551680773452.

The previous prime is 1551680773439. The next prime is 1551680773507. The reversal of 1551680773453 is 3543770861551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1538584717609 + 13096055844 = 1240397^2 + 114438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551680773453 - 2¹⁷ = 1551680642381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1551680773394 and 1551680773403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1551680774453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 775840386726 + 775840386727.

It is an arithmetic number, because the mean of its divisors is an integer number (775840386727).

Almost surely, 2^{1551680773453} is an apocalyptic number.

It is an amenable number.

1551680773453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1551680773453 is an equidigital number, since it uses as much as digits as its factorization.

1551680773453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 1551680773453 in words is "one trillion, five hundred fifty-one billion, six hundred eighty million, seven hundred seventy-three thousand, four hundred fifty-three".