4151212065 has 384 divisors, whose sum is σ = 10625126400. Its totient is φ = 1488015360.

The previous prime is 4151212061. The next prime is 4151212081. The reversal of 4151212065 is 5602121514.

It is not a de Polignac number, because 4151212065 - 2² = 4151212061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4151212061) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 29864766 + ... + 29864904.

It is an arithmetic number, because the mean of its divisors is an integer number (27669600).

Almost surely, 2^4151212065 is an apocalyptic number.

4151212065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4151212065 is an abundant number, since it is smaller than the sum of its proper divisors (6473914335).

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

4151212065 is a wasteful number, since it uses less digits than its factorization.

4151212065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 4151212065 is about 64429.9003957014. The cubic root of 4151212065 is about 1607.1570089928.

Adding to 4151212065 its reverse (5602121514), we get a palindrome (9753333579).

The spelling of 4151212065 in words is "four billion, one hundred fifty-one million, two hundred twelve thousand, sixty-five".