61402640320535 has 8 divisors (see below), whose sum is σ = 78017472407376. Its totient is φ = 46232576241280.

The previous prime is 61402640320531. The next prime is 61402640320559. The reversal of 61402640320535 is 53502304620416.

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

It is not a de Polignac number, because 61402640320535 - 2² = 61402640320531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61402640320492 and 61402640320501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61402640320531) 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, 361192001801 + ... + 361192001970.

It is an arithmetic number, because the mean of its divisors is an integer number (9752184050922).

Almost surely, 2^{61402640320535} is an apocalyptic number.

61402640320535 is a deficient number, since it is larger than the sum of its proper divisors (16614832086841).

61402640320535 is a wasteful number, since it uses less digits than its factorization.

61402640320535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722384003793.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 61402640320535 in words is "sixty-one trillion, four hundred two billion, six hundred forty million, three hundred twenty thousand, five hundred thirty-five".