67121265530 has 32 divisors (see below), whose sum is σ = 131879249280. Its totient is φ = 24393382720.

The previous prime is 67121265521. The next prime is 67121265559. The reversal of 67121265530 is 3556212176.

It is a happy number.

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, 9467 + ... + 366513.

It is an arithmetic number, because the mean of its divisors is an integer number (4121226540).

Almost surely, 2^67121265530 is an apocalyptic number.

67121265530 is a deficient number, since it is larger than the sum of its proper divisors (64757983750).

67121265530 is a wasteful number, since it uses less digits than its factorization.

67121265530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358774.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 67121265530 in words is "sixty-seven billion, one hundred twenty-one million, two hundred sixty-five thousand, five hundred thirty".