1604426237520 has 80 divisors (see below), whose sum is σ = 5036679893760. Its totient is φ = 422431206912.

The previous prime is 1604426237443. The next prime is 1604426237521. The reversal of 1604426237520 is 257326244061.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604426237521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42291859 + ... + 42329778.

It is an arithmetic number, because the mean of its divisors is an integer number (62958498672).

Almost surely, 2^{1604426237520} is an apocalyptic number.

1604426237520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1604426237520 is an abundant number, since it is smaller than the sum of its proper divisors (3432253656240).

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

1604426237520 is a wasteful number, since it uses less digits than its factorization.

1604426237520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84621732 (or 84621726 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 1604426237520 in words is "one trillion, six hundred four billion, four hundred twenty-six million, two hundred thirty-seven thousand, five hundred twenty".