651201626880 has 648 divisors, whose sum is σ = 2625850779552. Its totient is φ = 148567523328.

The previous prime is 651201626837. The next prime is 651201626893. The reversal of 651201626880 is 88626102156.

651201626880 is a `hidden beast` number, since 6 + 5 + 12 + 0 + 1 + 626 + 8 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 545851564 + ... + 545852756.

Almost surely, 2^651201626880 is an apocalyptic number.

651201626880 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 651201626880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1312925389776).

651201626880 is an abundant number, since it is smaller than the sum of its proper divisors (1974649152672).

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

651201626880 is a wasteful number, since it uses less digits than its factorization.

651201626880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 651201626880 in words is "six hundred fifty-one billion, two hundred one million, six hundred twenty-six thousand, eight hundred eighty".