65145544704 has 280 divisors, whose sum is σ = 200962003968. Its totient is φ = 21008056320.

The previous prime is 65145544703. The next prime is 65145544727. The reversal of 65145544704 is 40744554156.

65145544704 is a `hidden beast` number, since 6 + 51 + 4 + 554 + 47 + 0 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 65145544704.

It is not an unprimeable number, because it can be changed into a prime (65145544703) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20568529 + ... + 20571695.

Almost surely, 2^65145544704 is an apocalyptic number.

65145544704 is a gapful number since it is divisible by the number (64) 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 65145544704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100481001984).

65145544704 is an abundant number, since it is smaller than the sum of its proper divisors (135816459264).

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

65145544704 is an equidigital number, since it uses as much as digits as its factorization.

65145544704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3236 (or 3203 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 45.

The spelling of 65145544704 in words is "sixty-five billion, one hundred forty-five million, five hundred forty-four thousand, seven hundred four".