64109428485 has 16 divisors (see below), whose sum is σ = 102578380800. Its totient is φ = 34190596800.

The previous prime is 64109428441. The next prime is 64109428561. The reversal of 64109428485 is 58482490146.

It is not a de Polignac number, because 64109428485 - 2¹⁰ = 64109427461 is a prime.

It is a super-2 number, since 2×64109428485² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670716 + ... + 760314.

It is an arithmetic number, because the mean of its divisors is an integer number (6411148800).

Almost surely, 2^64109428485 is an apocalyptic number.

It is an amenable number.

64109428485 is a deficient number, since it is larger than the sum of its proper divisors (38468952315).

64109428485 is a wasteful number, since it uses less digits than its factorization.

64109428485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137308.

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 64109428485 in words is "sixty-four billion, one hundred nine million, four hundred twenty-eight thousand, four hundred eighty-five".