61403735634 has 8 divisors (see below), whose sum is σ = 122807471280. Its totient is φ = 20467911876.

The previous prime is 61403735611. The next prime is 61403735639. The reversal of 61403735634 is 43653730416.

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

61403735634 is an admirable number.

It is a super-2 number, since 2×61403735634² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61403735639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5116977964 + ... + 5116977975.

It is an arithmetic number, because the mean of its divisors is an integer number (15350933910).

Almost surely, 2^61403735634 is an apocalyptic number.

61403735634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61403735634 is a wasteful number, since it uses less digits than its factorization.

61403735634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233955944.

The product of its (nonzero) digits is 544320, while the sum is 42.

The spelling of 61403735634 in words is "sixty-one billion, four hundred three million, seven hundred thirty-five thousand, six hundred thirty-four".