64191436540683 has 8 divisors (see below), whose sum is σ = 85758738283008. Its totient is φ = 42709212912744.

The previous prime is 64191436540657. The next prime is 64191436540787. The reversal of 64191436540683 is 38604563419146.

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

It is not a de Polignac number, because 64191436540683 - 2¹³ = 64191436532491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64191436547683) 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, 21269526835 + ... + 21269529852.

It is an arithmetic number, because the mean of its divisors is an integer number (10719842285376).

Almost surely, 2^{64191436540683} is an apocalyptic number.

64191436540683 is a deficient number, since it is larger than the sum of its proper divisors (21567301742325).

64191436540683 is a wasteful number, since it uses less digits than its factorization.

64191436540683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42539057193.

The product of its (nonzero) digits is 44789760, while the sum is 60.

The spelling of 64191436540683 in words is "sixty-four trillion, one hundred ninety-one billion, four hundred thirty-six million, five hundred forty thousand, six hundred eighty-three".