40236705431640 has 128 divisors (see below), whose sum is σ = 134132752612800. Its totient is φ = 10728956021760.

The previous prime is 40236705431597. The next prime is 40236705431677. The reversal of 40236705431640 is 4613450763204.

40236705431640 is a `hidden beast` number, since 4 + 0 + 2 + 3 + 67 + 0 + 543 + 1 + 6 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 12551110 + ... + 15427370.

Almost surely, 2^{40236705431640} is an apocalyptic number.

40236705431640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40236705431640 is an abundant number, since it is smaller than the sum of its proper divisors (93896047181160).

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

40236705431640 is a wasteful number, since it uses less digits than its factorization.

40236705431640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889234 (or 2889224 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 45.

The spelling of 40236705431640 in words is "forty trillion, two hundred thirty-six billion, seven hundred five million, four hundred thirty-one thousand, six hundred forty".