64128140854 has 8 divisors (see below), whose sum is σ = 96196314888. Its totient is φ = 32062702560.

The previous prime is 64128140837. The next prime is 64128140893. The reversal of 64128140854 is 45804182146.

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

It is a super-2 number, since 2×64128140854² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64128140854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 624292 + ... + 719719.

It is an arithmetic number, because the mean of its divisors is an integer number (12024539361).

Almost surely, 2^64128140854 is an apocalyptic number.

64128140854 is a deficient number, since it is larger than the sum of its proper divisors (32068174034).

64128140854 is a wasteful number, since it uses less digits than its factorization.

64128140854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367870.

The product of its (nonzero) digits is 245760, while the sum is 43.

The spelling of 64128140854 in words is "sixty-four billion, one hundred twenty-eight million, one hundred forty thousand, eight hundred fifty-four".