33399872405520 has 80 divisors (see below), whose sum is σ = 103542719841792. Its totient is φ = 8906364651520.

The previous prime is 33399872405429. The next prime is 33399872405539. The reversal of 33399872405520 is 2550427899333.

It is a happy number.

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

It is a super-2 number, since 2×33399872405520² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 5963800 + ... + 10117640.

Almost surely, 2^{33399872405520} is an apocalyptic number.

33399872405520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33399872405520 is an abundant number, since it is smaller than the sum of its proper divisors (70142847436272).

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

33399872405520 is a wasteful number, since it uses less digits than its factorization.

33399872405520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187360 (or 4187354 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 60.

The spelling of 33399872405520 in words is "thirty-three trillion, three hundred ninety-nine billion, eight hundred seventy-two million, four hundred five thousand, five hundred twenty".