66440051456522 has 8 divisors (see below), whose sum is σ = 103993124018976. Its totient is φ = 31775676783532.

The previous prime is 66440051456497. The next prime is 66440051456543. The reversal of 66440051456522 is 22565415004466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×66440051456522² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722174472308 + ... + 722174472399.

It is an arithmetic number, because the mean of its divisors is an integer number (12999140502372).

Almost surely, 2^{66440051456522} is an apocalyptic number.

66440051456522 is a deficient number, since it is larger than the sum of its proper divisors (37553072562454).

66440051456522 is a wasteful number, since it uses less digits than its factorization.

66440051456522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444348944732.

The product of its (nonzero) digits is 6912000, while the sum is 50.

The spelling of 66440051456522 in words is "sixty-six trillion, four hundred forty billion, fifty-one million, four hundred fifty-six thousand, five hundred twenty-two".