64051378503 has 8 divisors (see below), whose sum is σ = 97602100608. Its totient is φ = 36600787704.

The previous prime is 64051378483. The next prime is 64051378513. The reversal of 64051378503 is 30587315046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64051378503 - 2²⁵ = 64017824071 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64051378513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525032801 + ... + 1525032842.

It is an arithmetic number, because the mean of its divisors is an integer number (12200262576).

Almost surely, 2^64051378503 is an apocalyptic number.

64051378503 is a deficient number, since it is larger than the sum of its proper divisors (33550722105).

64051378503 is a wasteful number, since it uses less digits than its factorization.

64051378503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3050065653.

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 64051378503 in words is "sixty-four billion, fifty-one million, three hundred seventy-eight thousand, five hundred three".