64215255052151 has 4 divisors (see below), whose sum is σ = 73388862916752. Its totient is φ = 55041647187552.

The previous prime is 64215255052129. The next prime is 64215255052217. The reversal of 64215255052151 is 15125055251246.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64215255052151 - 2⁶ = 64215255052087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64215255052451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4586803932290 + ... + 4586803932303.

It is an arithmetic number, because the mean of its divisors is an integer number (18347215729188).

Almost surely, 2^{64215255052151} is an apocalyptic number.

64215255052151 is a deficient number, since it is larger than the sum of its proper divisors (9173607864601).

64215255052151 is an equidigital number, since it uses as much as digits as its factorization.

64215255052151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9173607864600.

The product of its (nonzero) digits is 600000, while the sum is 44.

The spelling of 64215255052151 in words is "sixty-four trillion, two hundred fifteen billion, two hundred fifty-five million, fifty-two thousand, one hundred fifty-one".