61264145200 has 30 divisors (see below), whose sum is σ = 147187109804. Its totient is φ = 24505657920.

The previous prime is 61264145183. The next prime is 61264145203. The reversal of 61264145200 is 254146216.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61264145203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76579782 + ... + 76580581.

Almost surely, 2^61264145200 is an apocalyptic number.

It is an amenable number.

61264145200 is an abundant number, since it is smaller than the sum of its proper divisors (85922964604).

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

61264145200 is a wasteful number, since it uses less digits than its factorization.

61264145200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153160381 (or 153160370 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 61264145200 in words is "sixty-one billion, two hundred sixty-four million, one hundred forty-five thousand, two hundred".