61948471429 has 8 divisors (see below), whose sum is σ = 66715889912. Its totient is φ = 57181360320.

The previous prime is 61948471421. The next prime is 61948471433. The reversal of 61948471429 is 92417484916.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7997724900 + 53950746529 = 89430^2 + 232273^2 .

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 61948471429 - 2³ = 61948471421 is a prime.

It is a super-2 number, since 2×61948471429² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61948471429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61948471421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504919 + ... + 615499.

It is an arithmetic number, because the mean of its divisors is an integer number (8339486239).

Almost surely, 2^61948471429 is an apocalyptic number.

It is an amenable number.

61948471429 is a deficient number, since it is larger than the sum of its proper divisors (4767418483).

61948471429 is a wasteful number, since it uses less digits than its factorization.

61948471429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153687.

The product of its digits is 3483648, while the sum is 55.

The spelling of 61948471429 in words is "sixty-one billion, nine hundred forty-eight million, four hundred seventy-one thousand, four hundred twenty-nine".