66737000073407 has 4 divisors (see below), whose sum is σ = 70662705960096. Its totient is φ = 62811294186720.

The previous prime is 66737000073259. The next prime is 66737000073409. The reversal of 66737000073407 is 70437000073766.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66737000073407 - 2⁸ = 66737000073151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66737000073409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1962852943319 + ... + 1962852943352.

It is an arithmetic number, because the mean of its divisors is an integer number (17665676490024).

Almost surely, 2^{66737000073407} is an apocalyptic number.

66737000073407 is a deficient number, since it is larger than the sum of its proper divisors (3925705886689).

66737000073407 is a wasteful number, since it uses less digits than its factorization.

66737000073407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925705886688.

The product of its (nonzero) digits is 3111696, while the sum is 50.

The spelling of 66737000073407 in words is "sixty-six trillion, seven hundred thirty-seven billion, seventy-three thousand, four hundred seven".