66274515741 has 64 divisors (see below), whose sum is σ = 105363118080. Its totient is φ = 36254856960.

The previous prime is 66274515737. The next prime is 66274515757. The reversal of 66274515741 is 14751547266.

It is not a de Polignac number, because 66274515741 - 2² = 66274515737 is a prime.

It is a super-2 number, since 2×66274515741² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66274515721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 40733370 + ... + 40734996.

It is an arithmetic number, because the mean of its divisors is an integer number (1646298720).

Almost surely, 2^66274515741 is an apocalyptic number.

It is an amenable number.

66274515741 is a deficient number, since it is larger than the sum of its proper divisors (39088602339).

66274515741 is a wasteful number, since it uses less digits than its factorization.

66274515741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194.

The product of its digits is 1411200, while the sum is 48.

The spelling of 66274515741 in words is "sixty-six billion, two hundred seventy-four million, five hundred fifteen thousand, seven hundred forty-one".