651065051560 has 128 divisors (see below), whose sum is σ = 1837570406400. Its totient is φ = 201684245760.

The previous prime is 651065051557. The next prime is 651065051591. The reversal of 651065051560 is 65150560156.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146380 + ... + 1150459.

It is an arithmetic number, because the mean of its divisors is an integer number (14356018800).

Almost surely, 2^651065051560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651065051560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918785203200).

651065051560 is an abundant number, since it is smaller than the sum of its proper divisors (1186505354840).

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

651065051560 is a wasteful number, since it uses less digits than its factorization.

651065051560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297031 (or 1297027 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 651065051560 in words is "six hundred fifty-one billion, sixty-five million, fifty-one thousand, five hundred sixty".