651065137828680 has 384 divisors, whose sum is σ = 2182189396884480. Its totient is φ = 155149804093440.

The previous prime is 651065137828669. The next prime is 651065137828769. The reversal of 651065137828680 is 86828731560156.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 51266062 + ... + 62692418.

It is an arithmetic number, because the mean of its divisors is an integer number (5682784887720).

Almost surely, 2^{651065137828680} is an apocalyptic number.

651065137828680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651065137828680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091094698442240).

651065137828680 is an abundant number, since it is smaller than the sum of its proper divisors (1531124259055800).

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

651065137828680 is a wasteful number, since it uses less digits than its factorization.

651065137828680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11426489 (or 11426468 counting only the distinct ones).

The product of its (nonzero) digits is 116121600, while the sum is 66.

The spelling of 651065137828680 in words is "six hundred fifty-one trillion, sixty-five billion, one hundred thirty-seven million, eight hundred twenty-eight thousand, six hundred eighty".