64053503251 has 4 divisors (see below), whose sum is σ = 64096754904. Its totient is φ = 64010251600.

The previous prime is 64053503249. The next prime is 64053503273. The reversal of 64053503251 is 15230535046.

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 64053503251 - 2¹ = 64053503249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64053503051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21623605 + ... + 21626566.

It is an arithmetic number, because the mean of its divisors is an integer number (16024188726).

Almost surely, 2^64053503251 is an apocalyptic number.

64053503251 is a deficient number, since it is larger than the sum of its proper divisors (43251653).

64053503251 is a wasteful number, since it uses less digits than its factorization.

64053503251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43251652.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 64053503251 in words is "sixty-four billion, fifty-three million, five hundred three thousand, two hundred fifty-one".