40520733554 has 24 divisors (see below), whose sum is σ = 74863639260. Its totient is φ = 16344496896.

The previous prime is 40520733479. The next prime is 40520733569. The reversal of 40520733554 is 45533702504.

It can be written as a sum of positive squares in 2 ways, for example, as 38523090529 + 1997643025 = 196273^2 + 44695^2 .

It is a super-2 number, since 2×40520733554² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12159419 + ... + 12162750.

Almost surely, 2^40520733554 is an apocalyptic number.

40520733554 is a deficient number, since it is larger than the sum of its proper divisors (34342905706).

40520733554 is a wasteful number, since it uses less digits than its factorization.

40520733554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24322202 (or 24322195 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 38.

The spelling of 40520733554 in words is "forty billion, five hundred twenty million, seven hundred thirty-three thousand, five hundred fifty-four".