66245020534 has 32 divisors (see below), whose sum is σ = 126522694656. Its totient is φ = 25260601920.

The previous prime is 66245020519. The next prime is 66245020553. The reversal of 66245020534 is 43502054266.

It is a junction number, because it is equal to n+sod(n) for n = 66245020493 and 66245020502.

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, 4568959 + ... + 4583434.

It is an arithmetic number, because the mean of its divisors is an integer number (3953834208).

Almost surely, 2^66245020534 is an apocalyptic number.

66245020534 is a deficient number, since it is larger than the sum of its proper divisors (60277674122).

66245020534 is a wasteful number, since it uses less digits than its factorization.

66245020534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152460.

The product of its (nonzero) digits is 172800, while the sum is 37.

The spelling of 66245020534 in words is "sixty-six billion, two hundred forty-five million, twenty thousand, five hundred thirty-four".