64142181503 has 4 divisors (see below), whose sum is σ = 64188899688. Its totient is φ = 64095463320.

The previous prime is 64142181487. The next prime is 64142181511. The reversal of 64142181503 is 30518124146.

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 64142181503 - 2⁴ = 64142181487 is a prime.

It is a super-2 number, since 2×64142181503² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64142181583) 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, 23357033 + ... + 23359778.

It is an arithmetic number, because the mean of its divisors is an integer number (16047224922).

Almost surely, 2^64142181503 is an apocalyptic number.

64142181503 is a deficient number, since it is larger than the sum of its proper divisors (46718185).

64142181503 is a wasteful number, since it uses less digits than its factorization.

64142181503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46718184.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 64142181503 in words is "sixty-four billion, one hundred forty-two million, one hundred eighty-one thousand, five hundred three".