61557853483 has 8 divisors (see below), whose sum is σ = 70537460480. Its totient is φ = 52624653480.

The previous prime is 61557853481. The next prime is 61557853493. The reversal of 61557853483 is 38435875516.

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

It is not a de Polignac number, because 61557853483 - 2¹ = 61557853481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61557853481) 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, 11598903 + ... + 11604208.

It is an arithmetic number, because the mean of its divisors is an integer number (8817182560).

Almost surely, 2^61557853483 is an apocalyptic number.

61557853483 is a deficient number, since it is larger than the sum of its proper divisors (8979606997).

61557853483 is a wasteful number, since it uses less digits than its factorization.

61557853483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23203497.

The product of its digits is 12096000, while the sum is 55.

The spelling of 61557853483 in words is "sixty-one billion, five hundred fifty-seven million, eight hundred fifty-three thousand, four hundred eighty-three".