67942747509 has 32 divisors (see below), whose sum is σ = 111919847424. Its totient is φ = 35701629120.

The previous prime is 67942747493. The next prime is 67942747511. The reversal of 67942747509 is 90574724976.

It is not a de Polignac number, because 67942747509 - 2⁴ = 67942747493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67942747409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 401347 + ... + 544944.

It is an arithmetic number, because the mean of its divisors is an integer number (3497495232).

Almost surely, 2^67942747509 is an apocalyptic number.

It is an amenable number.

67942747509 is a deficient number, since it is larger than the sum of its proper divisors (43977099915).

67942747509 is a wasteful number, since it uses less digits than its factorization.

67942747509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946577.

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 67942747509 in words is "sixty-seven billion, nine hundred forty-two million, seven hundred forty-seven thousand, five hundred nine".