651397384207 has 6 divisors (see below), whose sum is σ = 687485882328. Its totient is φ = 617113311012.

The previous prime is 651397384181. The next prime is 651397384241. The reversal of 651397384207 is 702483793156.

651397384207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 651397384207 - 2²⁷ = 651263166479 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 (651397384277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 902212083 + ... + 902212804.

It is an arithmetic number, because the mean of its divisors is an integer number (114580980388).

It is a 1-persistent number, because it is pandigital, but 2⋅651397384207 = 1302794768414 is not.

Almost surely, 2^651397384207 is an apocalyptic number.

651397384207 is a deficient number, since it is larger than the sum of its proper divisors (36088498121).

651397384207 is a wasteful number, since it uses less digits than its factorization.

651397384207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804424925 (or 1804424906 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 651397384207 in words is "six hundred fifty-one billion, three hundred ninety-seven million, three hundred eighty-four thousand, two hundred seven".