66262000040400 has 120 divisors (see below), whose sum is σ = 212263696557504. Its totient is φ = 17669498470400.

The previous prime is 66262000040389. The next prime is 66262000040429. The reversal of 66262000040400 is 404000026266.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59662165 + ... + 60762635.

Almost surely, 2^{66262000040400} is an apocalyptic number.

66262000040400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66262000040400 is an abundant number, since it is smaller than the sum of its proper divisors (146001696517104).

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

66262000040400 is a wasteful number, since it uses less digits than its factorization.

66262000040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150669 (or 1150658 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 66262000040400 its reverse (404000026266), we get a palindrome (66666000066666).

The spelling of 66262000040400 in words is "sixty-six trillion, two hundred sixty-two billion, forty thousand, four hundred".