40651839522 has 270 divisors, whose sum is σ = 111010918689. Its totient is φ = 11086165440.

The previous prime is 40651839499. The next prime is 40651839523. The reversal of 40651839522 is 22593815604.

40651839522 is a `hidden beast` number, since 40 + 6 + 5 + 1 + 83 + 9 + 522 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 40464943281 + 186896241 = 201159^2 + 13671^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=142569.

It is not an unprimeable number, because it can be changed into a prime (40651839523) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 556874478 + ... + 556874550.

Almost surely, 2^40651839522 is an apocalyptic number.

40651839522 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40651839522

40651839522 is an abundant number, since it is smaller than the sum of its proper divisors (70359079167).

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

40651839522 is an equidigital number, since it uses as much as digits as its factorization.

40651839522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

It can be divided in two parts, 406518 and 39522, that added together give a triangular number (446040 = T₉₄₄).

The spelling of 40651839522 in words is "forty billion, six hundred fifty-one million, eight hundred thirty-nine thousand, five hundred twenty-two".