65211087277980 has 1344 divisors, whose sum is σ = 255618710323200. Its totient is φ = 13641034936320.

The previous prime is 65211087277979. The next prime is 65211087277993. The reversal of 65211087277980 is 8977278011256.

65211087277980 is a `hidden beast` number, since 6 + 521 + 1 + 0 + 8 + 7 + 27 + 7 + 9 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 447 ways as a sum of consecutive naturals, for example, 6476416386 + ... + 6476426454.

It is an arithmetic number, because the mean of its divisors is an integer number (190192492800).

Almost surely, 2^{65211087277980} is an apocalyptic number.

65211087277980 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 65211087277980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127809355161600).

65211087277980 is an abundant number, since it is smaller than the sum of its proper divisors (190407623045220).

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

65211087277980 is a wasteful number, since it uses less digits than its factorization.

65211087277980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10246 (or 10229 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 63.

The spelling of 65211087277980 in words is "sixty-five trillion, two hundred eleven billion, eighty-seven million, two hundred seventy-seven thousand, nine hundred eighty".