651686541120 has 896 divisors, whose sum is σ = 2505912468480. Its totient is φ = 158973788160.

The previous prime is 651686541119. The next prime is 651686541139. The reversal of 651686541120 is 21145686156.

651686541120 is a `hidden beast` number, since 6 + 5 + 1 + 6 + 86 + 541 + 1 + 20 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 448510314 + ... + 448511766.

Almost surely, 2^651686541120 is an apocalyptic number.

651686541120 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 651686541120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1252956234240).

651686541120 is an abundant number, since it is smaller than the sum of its proper divisors (1854225927360).

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

651686541120 is a wasteful number, since it uses less digits than its factorization.

651686541120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600 (or 1584 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 651686541120 in words is "six hundred fifty-one billion, six hundred eighty-six million, five hundred forty-one thousand, one hundred twenty".