67638573530 has 16 divisors (see below), whose sum is σ = 132817562784. Its totient is φ = 24595844880.

The previous prime is 67638573503. The next prime is 67638573533. The reversal of 67638573530 is 3537583676.

It is not an unprimeable number, because it can be changed into a prime (67638573533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307447952 + ... + 307448171.

It is an arithmetic number, because the mean of its divisors is an integer number (8301097674).

Almost surely, 2^67638573530 is an apocalyptic number.

67638573530 is a deficient number, since it is larger than the sum of its proper divisors (65178989254).

67638573530 is a wasteful number, since it uses less digits than its factorization.

67638573530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614896141.

The product of its (nonzero) digits is 9525600, while the sum is 53.

The spelling of 67638573530 in words is "sixty-seven billion, six hundred thirty-eight million, five hundred seventy-three thousand, five hundred thirty".