61541531555142 has 16 divisors (see below), whose sum is σ = 123156898201152. Its totient is φ = 20501538003240.

The previous prime is 61541531555113. The next prime is 61541531555209. The reversal of 61541531555142 is 24155513514516.

It is a junction number, because it is equal to n+sod(n) for n = 61541531555091 and 61541531555100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3076451284 + ... + 3076471287.

It is an arithmetic number, because the mean of its divisors is an integer number (7697306137572).

Almost surely, 2^{61541531555142} is an apocalyptic number.

61541531555142 is an abundant number, since it is smaller than the sum of its proper divisors (61615366646010).

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

61541531555142 is a wasteful number, since it uses less digits than its factorization.

61541531555142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152924243.

The product of its digits is 1800000, while the sum is 48.

The spelling of 61541531555142 in words is "sixty-one trillion, five hundred forty-one billion, five hundred thirty-one million, five hundred fifty-five thousand, one hundred forty-two".