651397419901 has 8 divisors (see below), whose sum is σ = 684560960864. Its totient is φ = 619052731920.

The previous prime is 651397419899. The next prime is 651397419923. The reversal of 651397419901 is 109914793156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 651397419901 - 2¹ = 651397419899 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 (651397411901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204711615 + ... + 204714796.

It is an arithmetic number, because the mean of its divisors is an integer number (85570120108).

Almost surely, 2^651397419901 is an apocalyptic number.

It is an amenable number.

651397419901 is a deficient number, since it is larger than the sum of its proper divisors (33163540963).

651397419901 is a wasteful number, since it uses less digits than its factorization.

651397419901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409426491.

The product of its (nonzero) digits is 1837080, while the sum is 55.

The spelling of 651397419901 in words is "six hundred fifty-one billion, three hundred ninety-seven million, four hundred nineteen thousand, nine hundred one".