33861215940 has 144 divisors (see below), whose sum is σ = 104331192000. Its totient is φ = 8182335744.

The previous prime is 33861215939. The next prime is 33861216001. The reversal of 33861215940 is 4951216833.

It is a super-2 number, since 2×33861215940² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33861215892 and 33861215901.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 574986 + ... + 631134.

Almost surely, 2^33861215940 is an apocalyptic number.

33861215940 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 33861215940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52165596000).

33861215940 is an abundant number, since it is smaller than the sum of its proper divisors (70469976060).

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

33861215940 is a wasteful number, since it uses less digits than its factorization.

33861215940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56226 (or 56201 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 33861215940 in words is "thirty-three billion, eight hundred sixty-one million, two hundred fifteen thousand, nine hundred forty".