61747297772289 has 8 divisors (see below), whose sum is σ = 84244375255392. Its totient is φ = 40207542735360.

The previous prime is 61747297772267. The next prime is 61747297772309. The reversal of 61747297772289 is 98227779274716.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61747297772289 - 2¹⁹ = 61747297248001 is a prime.

It is a super-2 number, since 2×61747297772289² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61747297772189) 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, 239330611392 + ... + 239330611649.

It is an arithmetic number, because the mean of its divisors is an integer number (10530546906924).

Almost surely, 2^{61747297772289} is an apocalyptic number.

It is an amenable number.

61747297772289 is a deficient number, since it is larger than the sum of its proper divisors (22497077483103).

61747297772289 is a wasteful number, since it uses less digits than its factorization.

61747297772289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478661223087.

The product of its digits is 2091059712, while the sum is 78.

The spelling of 61747297772289 in words is "sixty-one trillion, seven hundred forty-seven billion, two hundred ninety-seven million, seven hundred seventy-two thousand, two hundred eighty-nine".