64152663646402 has 4 divisors (see below), whose sum is σ = 96228995469606. Its totient is φ = 32076331823200.

The previous prime is 64152663646349. The next prime is 64152663646439. The reversal of 64152663646402 is 20464636625146.

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., 57602498716161 + 6550164930241 = 7589631^2 + 2559329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16038165911599 + ... + 16038165911602.

Almost surely, 2^{64152663646402} is an apocalyptic number.

64152663646402 is a deficient number, since it is larger than the sum of its proper divisors (32076331823204).

64152663646402 is a wasteful number, since it uses less digits than its factorization.

64152663646402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32076331823203.

The product of its (nonzero) digits is 29859840, while the sum is 55.

The spelling of 64152663646402 in words is "sixty-four trillion, one hundred fifty-two billion, six hundred sixty-three million, six hundred forty-six thousand, four hundred two".