651005056001 has 4 divisors (see below), whose sum is σ = 656131080192. Its totient is φ = 645879031812.

The previous prime is 651005055997. The next prime is 651005056027. The reversal of 651005056001 is 100650500156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 651005056001 - 2² = 651005055997 is a prime.

It is a super-2 number, since 2×651005056001² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (651005056201) 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, 2563011905 + ... + 2563012158.

It is an arithmetic number, because the mean of its divisors is an integer number (164032770048).

Almost surely, 2^651005056001 is an apocalyptic number.

It is an amenable number.

651005056001 is a deficient number, since it is larger than the sum of its proper divisors (5126024191).

651005056001 is a wasteful number, since it uses less digits than its factorization.

651005056001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126024190.

The product of its (nonzero) digits is 4500, while the sum is 29.

Adding to 651005056001 its reverse (100650500156), we get a palindrome (751655556157).

The spelling of 651005056001 in words is "six hundred fifty-one billion, five million, fifty-six thousand, one".