61556210145411 has 8 divisors (see below), whose sum is σ = 86394680905920. Its totient is φ = 38877606407592.

The previous prime is 61556210145407. The next prime is 61556210145413. The reversal of 61556210145411 is 11454101265516.

It is a happy number.

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

It is not a de Polignac number, because 61556210145411 - 2² = 61556210145407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61556210145413) 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, 539966755605 + ... + 539966755718.

It is an arithmetic number, because the mean of its divisors is an integer number (10799335113240).

Almost surely, 2^{61556210145411} is an apocalyptic number.

61556210145411 is a deficient number, since it is larger than the sum of its proper divisors (24838470760509).

61556210145411 is a wasteful number, since it uses less digits than its factorization.

61556210145411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079933511345.

The product of its (nonzero) digits is 144000, while the sum is 42.

The spelling of 61556210145411 in words is "sixty-one trillion, five hundred fifty-six billion, two hundred ten million, one hundred forty-five thousand, four hundred eleven".