66156005106 has 48 divisors (see below), whose sum is σ = 148115395584. Its totient is φ = 21324334752.

The previous prime is 66156005101. The next prime is 66156005107. The reversal of 66156005106 is 60150065166.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66156005101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196146 + ... + 413261.

It is an arithmetic number, because the mean of its divisors is an integer number (3085737408).

Almost surely, 2^66156005106 is an apocalyptic number.

66156005106 is an abundant number, since it is smaller than the sum of its proper divisors (81959390478).

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

66156005106 is a wasteful number, since it uses less digits than its factorization.

66156005106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609615 (or 609612 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 66156005106 in words is "sixty-six billion, one hundred fifty-six million, five thousand, one hundred six".