1505996420736 has 128 divisors (see below), whose sum is σ = 4046709240000. Its totient is φ = 496206913536.

The previous prime is 1505996420729. The next prime is 1505996420737. The reversal of 1505996420736 is 6370246995051.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (1505996420737) 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, 12161500 + ... + 12284708.

Almost surely, 2^{1505996420736} is an apocalyptic number.

1505996420736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1505996420736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2023354620000).

1505996420736 is an abundant number, since it is smaller than the sum of its proper divisors (2540712819264).

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

1505996420736 is a wasteful number, since it uses less digits than its factorization.

1505996420736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123594 (or 123582 counting only the distinct ones).

The product of its (nonzero) digits is 12247200, while the sum is 57.

The spelling of 1505996420736 in words is "one trillion, five hundred five billion, nine hundred ninety-six million, four hundred twenty thousand, seven hundred thirty-six".