66272736554 has 16 divisors (see below), whose sum is σ = 107469304800. Its totient is φ = 30543906384.

The previous prime is 66272736499. The next prime is 66272736559. The reversal of 66272736554 is 45563727266.

It is a super-2 number, since 2×66272736554² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66272736496 and 66272736505.

It is not an unprimeable number, because it can be changed into a prime (66272736559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23566424 + ... + 23569235.

It is an arithmetic number, because the mean of its divisors is an integer number (6716831550).

Almost surely, 2^66272736554 is an apocalyptic number.

66272736554 is a deficient number, since it is larger than the sum of its proper divisors (41196568246).

66272736554 is a wasteful number, since it uses less digits than its factorization.

66272736554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47135717.

The product of its digits is 12700800, while the sum is 53.

The spelling of 66272736554 in words is "sixty-six billion, two hundred seventy-two million, seven hundred thirty-six thousand, five hundred fifty-four".