66040002626460 has 48 divisors (see below), whose sum is σ = 192951659851776. Its totient is φ = 16844986176832.

The previous prime is 66040002626447. The next prime is 66040002626471. The reversal of 66040002626460 is 6462620004066.

It is a super-2 number, since 2×66040002626460² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23927535804 + ... + 23927538563.

It is an arithmetic number, because the mean of its divisors is an integer number (4019826246912).

Almost surely, 2^{66040002626460} is an apocalyptic number.

66040002626460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66040002626460 is an abundant number, since it is smaller than the sum of its proper divisors (126911657225316).

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

66040002626460 is a wasteful number, since it uses less digits than its factorization.

66040002626460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47855074402 (or 47855074400 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 66040002626460 in words is "sixty-six trillion, forty billion, two million, six hundred twenty-six thousand, four hundred sixty".