154051663693 has 2 divisors, whose sum is σ = 154051663694. Its totient is φ = 154051663692.

The previous prime is 154051663679. The next prime is 154051663739. The reversal of 154051663693 is 396366150451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129083555524 + 24968108169 = 359282^2 + 158013^2 .

It is an emirp because it is prime and its reverse (396366150451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154051663693 - 2³⁷ = 16612710221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154051663993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77025831846 + 77025831847.

It is an arithmetic number, because the mean of its divisors is an integer number (77025831847).

Almost surely, 2^154051663693 is an apocalyptic number.

It is an amenable number.

154051663693 is a deficient number, since it is larger than the sum of its proper divisors (1).

154051663693 is an equidigital number, since it uses as much as digits as its factorization.

154051663693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 154051663693 in words is "one hundred fifty-four billion, fifty-one million, six hundred sixty-three thousand, six hundred ninety-three".