20040033542340 has 96 divisors (see below), whose sum is σ = 64130281979904. Its totient is φ = 4580423763840.

The previous prime is 20040033542323. The next prime is 20040033542371. The reversal of 20040033542340 is 4324533004002.

It is a super-2 number, since 2×20040033542340² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20040033542298 and 20040033542307.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11825745 + ... + 13413735.

It is an arithmetic number, because the mean of its divisors is an integer number (668023770624).

Almost surely, 2^{20040033542340} is an apocalyptic number.

20040033542340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20040033542340 is an abundant number, since it is smaller than the sum of its proper divisors (44090248437564).

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

20040033542340 is a wasteful number, since it uses less digits than its factorization.

20040033542340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618057 (or 1618055 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 20040033542340 its reverse (4324533004002), we get a palindrome (24364566546342).

The spelling of 20040033542340 in words is "twenty trillion, forty billion, thirty-three million, five hundred forty-two thousand, three hundred forty".