612553404942 has 64 divisors (see below), whose sum is σ = 1391290551360. Its totient is φ = 199699673472.

The previous prime is 612553404941. The next prime is 612553404973. The reversal of 612553404942 is 249404355216.

612553404942 is a `hidden beast` number, since 6 + 1 + 2 + 553 + 4 + 0 + 4 + 94 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612553404941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 569668 + ... + 1244840.

It is an arithmetic number, because the mean of its divisors is an integer number (21738914865).

Almost surely, 2^612553404942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612553404942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695645275680).

612553404942 is an abundant number, since it is smaller than the sum of its proper divisors (778737146418).

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

612553404942 is a wasteful number, since it uses less digits than its factorization.

612553404942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675554 (or 675548 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 612553404942 in words is "six hundred twelve billion, five hundred fifty-three million, four hundred four thousand, nine hundred forty-two".