651416160066 has 128 divisors (see below), whose sum is σ = 1613392736256. Its totient is φ = 171304657920.

The previous prime is 651416160047. The next prime is 651416160163. The reversal of 651416160066 is 660061614156.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2778585 + ... + 3003891.

It is an arithmetic number, because the mean of its divisors is an integer number (12604630752).

Almost surely, 2^651416160066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651416160066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806696368128).

651416160066 is an abundant number, since it is smaller than the sum of its proper divisors (961976576190).

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

651416160066 is a wasteful number, since it uses less digits than its factorization.

651416160066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225456.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 651416160066 in words is "six hundred fifty-one billion, four hundred sixteen million, one hundred sixty thousand, sixty-six".