645106650535 has 64 divisors (see below), whose sum is σ = 837070692480. Its totient is φ = 476281128960.

The previous prime is 645106650479. The next prime is 645106650547. The reversal of 645106650535 is 535056601546.

It is not a de Polignac number, because 645106650535 - 2⁷ = 645106650407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 139119237 + ... + 139123873.

It is an arithmetic number, because the mean of its divisors is an integer number (13079229570).

Almost surely, 2^645106650535 is an apocalyptic number.

645106650535 is a deficient number, since it is larger than the sum of its proper divisors (191964041945).

645106650535 is a wasteful number, since it uses less digits than its factorization.

645106650535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5188.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 645106650535 in words is "six hundred forty-five billion, one hundred six million, six hundred fifty thousand, five hundred thirty-five".