20004305261500 has 96 divisors (see below), whose sum is σ = 49932198650880. Its totient is φ = 6858419400000.

The previous prime is 20004305261491. The next prime is 20004305261509. The reversal of 20004305261500 is 516250340002.

It is an interprime number because it is at equal distance from previous prime (20004305261491) and next prime (20004305261509).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20004305261509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169827625 + ... + 169945375.

It is an arithmetic number, because the mean of its divisors is an integer number (520127069280).

Almost surely, 2^{20004305261500} is an apocalyptic number.

20004305261500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004305261500 is an abundant number, since it is smaller than the sum of its proper divisors (29927893389380).

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

20004305261500 is a wasteful number, since it uses less digits than its factorization.

20004305261500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166316 (or 166304 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 20004305261500 in words is "twenty trillion, four billion, three hundred five million, two hundred sixty-one thousand, five hundred".