613604287440 has 160 divisors (see below), whose sum is σ = 2205418487040. Its totient is φ = 156513544704.

The previous prime is 613604287423. The next prime is 613604287451. The reversal of 613604287440 is 44782406316.

613604287440 is a `hidden beast` number, since 6 + 1 + 360 + 4 + 287 + 4 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6125887 + ... + 6225246.

It is an arithmetic number, because the mean of its divisors is an integer number (13783865544).

Almost surely, 2^613604287440 is an apocalyptic number.

613604287440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

613604287440 is an abundant number, since it is smaller than the sum of its proper divisors (1591814199600).

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

613604287440 is a wasteful number, since it uses less digits than its factorization.

613604287440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12351178 (or 12351166 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The spelling of 613604287440 in words is "six hundred thirteen billion, six hundred four million, two hundred eighty-seven thousand, four hundred forty".