61401265471 has 8 divisors (see below), whose sum is σ = 75570788384. Its totient is φ = 48581220960.

The previous prime is 61401265463. The next prime is 61401265487. The reversal of 61401265471 is 17456210416.

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

It is a cyclic number.

It is not a de Polignac number, because 61401265471 - 2³ = 61401265463 is a prime.

It is a super-3 number, since 3×61401265471³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61401265471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61401265271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337369500 + ... + 337369681.

It is an arithmetic number, because the mean of its divisors is an integer number (9446348548).

Almost surely, 2^61401265471 is an apocalyptic number.

61401265471 is a deficient number, since it is larger than the sum of its proper divisors (14169522913).

61401265471 is a wasteful number, since it uses less digits than its factorization.

61401265471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674739201.

The product of its (nonzero) digits is 40320, while the sum is 37.

Adding to 61401265471 its reverse (17456210416), we get a palindrome (78857475887).

The spelling of 61401265471 in words is "sixty-one billion, four hundred one million, two hundred sixty-five thousand, four hundred seventy-one".