33397920000 has 540 divisors, whose sum is σ = 124931446640. Its totient is φ = 8895744000.

The previous prime is 33397919987. The next prime is 33397920011. The reversal of 33397920000 is 2979333.

It is a tau number, because it is divible by the number of its divisors (540).

It is a super-2 number, since 2×33397920000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 38879571 + ... + 38880429.

Almost surely, 2^33397920000 is an apocalyptic number.

33397920000 is a gapful number since it is divisible by the number (30) 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 33397920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62465723320).

33397920000 is an abundant number, since it is smaller than the sum of its proper divisors (91533526640).

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

33397920000 is an frugal number, since it uses more digits than its factorization.

33397920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 36.

The spelling of 33397920000 in words is "thirty-three billion, three hundred ninety-seven million, nine hundred twenty thousand".