66737000070040 has 16 divisors (see below), whose sum is σ = 150158250157680. Its totient is φ = 26694800028000.

The previous prime is 66737000070029. The next prime is 66737000070047. The reversal of 66737000070040 is 4007000073766.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1668425001751 = 66737000070040 / (6 + 6 + 7 + 3 + 7 + 0 + 0 + 0 + 0 + 7 + 0 + 0 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 66737000069975 and 66737000070002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66737000070047) 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, 834212500836 + ... + 834212500915.

It is an arithmetic number, because the mean of its divisors is an integer number (9384890634855).

Almost surely, 2^{66737000070040} is an apocalyptic number.

It is an amenable number.

66737000070040 is an abundant number, since it is smaller than the sum of its proper divisors (83421250087640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66737000070040 is a wasteful number, since it uses less digits than its factorization.

66737000070040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668425001762 (or 1668425001758 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 40.

The spelling of 66737000070040 in words is "sixty-six trillion, seven hundred thirty-seven billion, seventy thousand, forty".