61331599442 has 8 divisors (see below), whose sum is σ = 96839367600. Its totient is φ = 29051810244.

The previous prime is 61331599393. The next prime is 61331599453. The reversal of 61331599442 is 24499513316.

61331599442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×61331599442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 806994692 + ... + 806994767.

It is an arithmetic number, because the mean of its divisors is an integer number (12104920950).

Almost surely, 2^61331599442 is an apocalyptic number.

61331599442 is a deficient number, since it is larger than the sum of its proper divisors (35507768158).

61331599442 is a wasteful number, since it uses less digits than its factorization.

61331599442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613989480.

The product of its digits is 699840, while the sum is 47.

The spelling of 61331599442 in words is "sixty-one billion, three hundred thirty-one million, five hundred ninety-nine thousand, four hundred forty-two".