61435596728 has 16 divisors (see below), whose sum is σ = 125663720760. Its totient is φ = 27925271200.

The previous prime is 61435596713. The next prime is 61435596757. The reversal of 61435596728 is 82769553416.

It is a super-3 number, since 3×61435596728³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349065803 + ... + 349065978.

Almost surely, 2^61435596728 is an apocalyptic number.

It is an amenable number.

61435596728 is an abundant number, since it is smaller than the sum of its proper divisors (64228124032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61435596728 is a wasteful number, since it uses less digits than its factorization.

61435596728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698131798 (or 698131794 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 56.

The spelling of 61435596728 in words is "sixty-one billion, four hundred thirty-five million, five hundred ninety-six thousand, seven hundred twenty-eight".