1654915896061 has 2 divisors, whose sum is σ = 1654915896062. Its totient is φ = 1654915896060.

The previous prime is 1654915896047. The next prime is 1654915896091. The reversal of 1654915896061 is 1606985194561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 951697802500 + 703218093561 = 975550^2 + 838581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1654915896061 - 2³⁷ = 1517476942589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1654915896091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827457948030 + 827457948031.

It is an arithmetic number, because the mean of its divisors is an integer number (827457948031).

Almost surely, 2^{1654915896061} is an apocalyptic number.

It is an amenable number.

1654915896061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1654915896061 is an equidigital number, since it uses as much as digits as its factorization.

1654915896061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 1654915896061 in words is "one trillion, six hundred fifty-four billion, nine hundred fifteen million, eight hundred ninety-six thousand, sixty-one".