40511513642 has 4 divisors (see below), whose sum is σ = 60767270466. Its totient is φ = 20255756820.

The previous prime is 40511513633. The next prime is 40511513671. The reversal of 40511513642 is 24631511504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39936425281 + 575088361 = 199841^2 + 23981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40511513599 and 40511513608.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10127878409 + ... + 10127878412.

Almost surely, 2^40511513642 is an apocalyptic number.

40511513642 is a deficient number, since it is larger than the sum of its proper divisors (20255756824).

40511513642 is a wasteful number, since it uses less digits than its factorization.

40511513642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20255756823.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 40511513642 in words is "forty billion, five hundred eleven million, five hundred thirteen thousand, six hundred forty-two".