64281556122 has 32 divisors (see below), whose sum is σ = 149337953664. Its totient is φ = 18065073600.

The previous prime is 64281556111. The next prime is 64281556127. The reversal of 64281556122 is 22165518246.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (64281556127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12542629 + ... + 12547752.

It is an arithmetic number, because the mean of its divisors is an integer number (4666811052).

Almost surely, 2^64281556122 is an apocalyptic number.

64281556122 is an abundant number, since it is smaller than the sum of its proper divisors (85056397542).

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

64281556122 is a wasteful number, since it uses less digits than its factorization.

64281556122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25090454.

The product of its digits is 230400, while the sum is 42.

The spelling of 64281556122 in words is "sixty-four billion, two hundred eighty-one million, five hundred fifty-six thousand, one hundred twenty-two".