2151520040663 has 16 divisors (see below), whose sum is σ = 2588819205120. Its totient is φ = 1746744997536.

The previous prime is 2151520040629. The next prime is 2151520040687. The reversal of 2151520040663 is 3660400251512.

It is not a de Polignac number, because 2151520040663 - 2⁶ = 2151520040599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151520040563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978920 + ... + 2293757.

It is an arithmetic number, because the mean of its divisors is an integer number (161801200320).

Almost surely, 2^{2151520040663} is an apocalyptic number.

2151520040663 is a deficient number, since it is larger than the sum of its proper divisors (437299164457).

2151520040663 is a wasteful number, since it uses less digits than its factorization.

2151520040663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277646.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 2151520040663 in words is "two trillion, one hundred fifty-one billion, five hundred twenty million, forty thousand, six hundred sixty-three".