651040253205 has 16 divisors (see below), whose sum is σ = 1041719460480. Its totient is φ = 347203116608.

The previous prime is 651040253167. The next prime is 651040253219. The reversal of 651040253205 is 502352040156.

It is a cyclic number.

It is not a de Polignac number, because 651040253205 - 2⁶ = 651040253141 is a prime.

It is a super-2 number, since 2×651040253205² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 851262 + ... + 1423631.

It is an arithmetic number, because the mean of its divisors is an integer number (65107466280).

Almost surely, 2^651040253205 is an apocalyptic number.

It is an amenable number.

651040253205 is a deficient number, since it is larger than the sum of its proper divisors (390679207275).

651040253205 is a wasteful number, since it uses less digits than its factorization.

651040253205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293980.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 651040253205 in words is "six hundred fifty-one billion, forty million, two hundred fifty-three thousand, two hundred five".