66554703712 has 48 divisors (see below), whose sum is σ = 153795348000. Its totient is φ = 27752537088.

The previous prime is 66554703689. The next prime is 66554703757. The reversal of 66554703712 is 21730745566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4006837 + ... + 4023412.

It is an arithmetic number, because the mean of its divisors is an integer number (3204069750).

Almost surely, 2^66554703712 is an apocalyptic number.

It is an amenable number.

66554703712 is an abundant number, since it is smaller than the sum of its proper divisors (87240644288).

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

66554703712 is a wasteful number, since it uses less digits than its factorization.

66554703712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030303 (or 8030295 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 66554703712 in words is "sixty-six billion, five hundred fifty-four million, seven hundred three thousand, seven hundred twelve".