64123032146 has 4 divisors (see below), whose sum is σ = 96184548222. Its totient is φ = 32061516072.

The previous prime is 64123032119. The next prime is 64123032157.

64123032146 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49175280025 + 14947752121 = 221755^2 + 122261^2 .

It is a super-2 number, since 2×64123032146² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16030758035 + ... + 16030758038.

Almost surely, 2^64123032146 is an apocalyptic number.

64123032146 is a deficient number, since it is larger than the sum of its proper divisors (32061516076).

64123032146 is a wasteful number, since it uses less digits than its factorization.

64123032146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32061516075.

The product of its (nonzero) digits is 20736, while the sum is 32.

It can be divided in two parts, 641230 and 32146, that added together give a palindrome (673376).

The spelling of 64123032146 in words is "sixty-four billion, one hundred twenty-three million, thirty-two thousand, one hundred forty-six".