651245430570 has 128 divisors (see below), whose sum is σ = 1797807439872. Its totient is φ = 147897964800.

The previous prime is 651245430547. The next prime is 651245430581. The reversal of 651245430570 is 75034542156.

It is a super-2 number, since 2×651245430570² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20870380 + ... + 20901560.

It is an arithmetic number, because the mean of its divisors is an integer number (14045370624).

Almost surely, 2^651245430570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651245430570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898903719936).

651245430570 is an abundant number, since it is smaller than the sum of its proper divisors (1146562009302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

651245430570 is a wasteful number, since it uses less digits than its factorization.

651245430570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31836.

The product of its (nonzero) digits is 504000, while the sum is 42.

The spelling of 651245430570 in words is "six hundred fifty-one billion, two hundred forty-five million, four hundred thirty thousand, five hundred seventy".