61353402539 has 8 divisors (see below), whose sum is σ = 72079522032. Its totient is φ = 51485372640.

The previous prime is 61353402533. The next prime is 61353402587. The reversal of 61353402539 is 93520435316.

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

It is a de Polignac number, because none of the positive numbers 2^k-61353402539 is a prime.

It is a super-2 number, since 2×61353402539² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61353402496 and 61353402505.

It is not an unprimeable number, because it can be changed into a prime (61353402533) 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, 214522244 + ... + 214522529.

It is an arithmetic number, because the mean of its divisors is an integer number (9009940254).

Almost surely, 2^61353402539 is an apocalyptic number.

61353402539 is a deficient number, since it is larger than the sum of its proper divisors (10726119493).

61353402539 is a wasteful number, since it uses less digits than its factorization.

61353402539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429044797.

The product of its (nonzero) digits is 291600, while the sum is 41.

The spelling of 61353402539 in words is "sixty-one billion, three hundred fifty-three million, four hundred two thousand, five hundred thirty-nine".