61261354471 has 8 divisors (see below), whose sum is σ = 65086621920. Its totient is φ = 57550274208.

The previous prime is 61261354463. The next prime is 61261354543. The reversal of 61261354471 is 17445316216.

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 61261354471 - 2³ = 61261354463 is a prime.

It is a super-3 number, since 3×61261354471³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61261354421) 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, 28545691 + ... + 28547836.

It is an arithmetic number, because the mean of its divisors is an integer number (8135827740).

Almost surely, 2^61261354471 is an apocalyptic number.

61261354471 is a deficient number, since it is larger than the sum of its proper divisors (3825267449).

61261354471 is a wasteful number, since it uses less digits than its factorization.

61261354471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57093593.

The product of its digits is 120960, while the sum is 40.

The spelling of 61261354471 in words is "sixty-one billion, two hundred sixty-one million, three hundred fifty-four thousand, four hundred seventy-one".