64520083146 has 32 divisors (see below), whose sum is σ = 129293131968. Its totient is φ = 21464576640.

The previous prime is 64520083091. The next prime is 64520083183. The reversal of 64520083146 is 64138002546.

64520083146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64520083146² (a number of 22 digits) contains 22 as substring.

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, 7621356 + ... + 7629816.

It is an arithmetic number, because the mean of its divisors is an integer number (4040410374).

Almost surely, 2^64520083146 is an apocalyptic number.

64520083146 is an abundant number, since it is smaller than the sum of its proper divisors (64773048822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64520083146 is a wasteful number, since it uses less digits than its factorization.

64520083146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10806.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 64520083146 in words is "sixty-four billion, five hundred twenty million, eighty-three thousand, one hundred forty-six".