66551148454 has 32 divisors (see below), whose sum is σ = 117404660736. Its totient is φ = 27701943360.

The previous prime is 66551148397. The next prime is 66551148473. The reversal of 66551148454 is 45484115566.

It is a junction number, because it is equal to n+sod(n) for n = 66551148398 and 66551148407.

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, 299839 + ... + 472234.

It is an arithmetic number, because the mean of its divisors is an integer number (3668895648).

Almost surely, 2^66551148454 is an apocalyptic number.

66551148454 is a deficient number, since it is larger than the sum of its proper divisors (50853512282).

66551148454 is a wasteful number, since it uses less digits than its factorization.

66551148454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772260.

The product of its digits is 2304000, while the sum is 49.

The spelling of 66551148454 in words is "sixty-six billion, five hundred fifty-one million, one hundred forty-eight thousand, four hundred fifty-four".