66130123202451 has 256 divisors, whose sum is σ = 136228453171200. Its totient is φ = 30610230220800.

The previous prime is 66130123202447. The next prime is 66130123202471. The reversal of 66130123202451 is 15420232103166.

66130123202451 is a `hidden beast` number, since 6 + 6 + 1 + 301 + 2 + 320 + 24 + 5 + 1 = 666.

It is not a de Polignac number, because 66130123202451 - 2² = 66130123202447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66130123202471) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1022688061 + ... + 1022752721.

It is an arithmetic number, because the mean of its divisors is an integer number (532142395200).

Almost surely, 2^{66130123202451} is an apocalyptic number.

66130123202451 is an abundant number, since it is smaller than the sum of its proper divisors (70098329968749).

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

66130123202451 is a wasteful number, since it uses less digits than its factorization.

66130123202451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66247 (or 66241 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 66130123202451 in words is "sixty-six trillion, one hundred thirty billion, one hundred twenty-three million, two hundred two thousand, four hundred fifty-one".