67712447650 has 24 divisors (see below), whose sum is σ = 125998005924. Its totient is φ = 27073612800.

The previous prime is 67712447639. The next prime is 67712447659. The reversal of 67712447650 is 5674421776.

It can be written as a sum of positive squares in 6 ways, for example, as 3091248801 + 64621198849 = 55599^2 + 254207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67712447594 and 67712447603.

It is not an unprimeable number, because it can be changed into a prime (67712447659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163311 + ... + 402610.

Almost surely, 2^67712447650 is an apocalyptic number.

67712447650 is a deficient number, since it is larger than the sum of its proper divisors (58285558274).

67712447650 is a wasteful number, since it uses less digits than its factorization.

67712447650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568326 (or 568321 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 67712447650 in words is "sixty-seven billion, seven hundred twelve million, four hundred forty-seven thousand, six hundred fifty".