1601394358920 has 64 divisors (see below), whose sum is σ = 4812020464320. Its totient is φ = 426341839104.

The previous prime is 1601394358909. The next prime is 1601394358987. The reversal of 1601394358920 is 298534931061.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10811394 + ... + 10958513.

It is an arithmetic number, because the mean of its divisors is an integer number (75187819755).

Almost surely, 2^{1601394358920} is an apocalyptic number.

1601394358920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601394358920 is an abundant number, since it is smaller than the sum of its proper divisors (3210626105400).

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

1601394358920 is a wasteful number, since it uses less digits than its factorization.

1601394358920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21770534 (or 21770530 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 1601394358920 in words is "one trillion, six hundred one billion, three hundred ninety-four million, three hundred fifty-eight thousand, nine hundred twenty".