10240646251655 has 4 divisors (see below), whose sum is σ = 12288775501992. Its totient is φ = 8192517001320.

The previous prime is 10240646251607. The next prime is 10240646251657. The reversal of 10240646251655 is 55615264604201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10240646251655 - 2¹⁰ = 10240646250631 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 (10240646251657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1024064625161 + ... + 1024064625170.

It is an arithmetic number, because the mean of its divisors is an integer number (3072193875498).

Almost surely, 2^{10240646251655} is an apocalyptic number.

10240646251655 is a deficient number, since it is larger than the sum of its proper divisors (2048129250337).

10240646251655 is an equidigital number, since it uses as much as digits as its factorization.

10240646251655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2048129250336.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 10240646251655 in words is "ten trillion, two hundred forty billion, six hundred forty-six million, two hundred fifty-one thousand, six hundred fifty-five".