61435509671 has 8 divisors (see below), whose sum is σ = 61740336000. Its totient is φ = 61131420000.

The previous prime is 61435509659. The next prime is 61435509713. The reversal of 61435509671 is 17690553416.

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 61435509671 - 2¹⁸ = 61435247527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61435509071) 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, 16580 + ... + 350921.

It is an arithmetic number, because the mean of its divisors is an integer number (7717542000).

Almost surely, 2^61435509671 is an apocalyptic number.

61435509671 is a deficient number, since it is larger than the sum of its proper divisors (304826329).

61435509671 is a wasteful number, since it uses less digits than its factorization.

61435509671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368329.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 61435509671 in words is "sixty-one billion, four hundred thirty-five million, five hundred nine thousand, six hundred seventy-one".