66045025155454 has 32 divisors (see below), whose sum is σ = 103164225728256. Its totient is φ = 31676915496960.

The previous prime is 66045025155451. The next prime is 66045025155463. The reversal of 66045025155454 is 45455152054066.

It is a super-2 number, since 2×66045025155454² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66045025155451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6648217 + ... + 13277380.

It is an arithmetic number, because the mean of its divisors is an integer number (3223882054008).

Almost surely, 2^{66045025155454} is an apocalyptic number.

66045025155454 is a deficient number, since it is larger than the sum of its proper divisors (37119200572802).

66045025155454 is a wasteful number, since it uses less digits than its factorization.

66045025155454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19926100.

The product of its (nonzero) digits is 14400000, while the sum is 52.

The spelling of 66045025155454 in words is "sixty-six trillion, forty-five billion, twenty-five million, one hundred fifty-five thousand, four hundred fifty-four".