1552046643391 has 2 divisors, whose sum is σ = 1552046643392. Its totient is φ = 1552046643390.

The previous prime is 1552046643361. The next prime is 1552046643457. The reversal of 1552046643391 is 1933466402551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1552046643391 - 2¹⁷ = 1552046512319 is a prime.

It is a super-2 number, since 2×1552046643391² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1552046643331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 776023321695 + 776023321696.

It is an arithmetic number, because the mean of its divisors is an integer number (776023321696).

Almost surely, 2^{1552046643391} is an apocalyptic number.

1552046643391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1552046643391 is an equidigital number, since it uses as much as digits as its factorization.

1552046643391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 1552046643391 in words is "one trillion, five hundred fifty-two billion, forty-six million, six hundred forty-three thousand, three hundred ninety-one".