40651555663 has 8 divisors (see below), whose sum is σ = 40901670432. Its totient is φ = 40401520896.

The previous prime is 40651555613. The next prime is 40651555709. The reversal of 40651555663 is 36655515604.

40651555663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40651555663 - 2²⁵ = 40618001231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40651555613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1242531 + ... + 1274827.

It is an arithmetic number, because the mean of its divisors is an integer number (5112708804).

Almost surely, 2^40651555663 is an apocalyptic number.

40651555663 is a deficient number, since it is larger than the sum of its proper divisors (250114769).

40651555663 is a wasteful number, since it uses less digits than its factorization.

40651555663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40001.

The product of its (nonzero) digits is 1620000, while the sum is 46.

The spelling of 40651555663 in words is "forty billion, six hundred fifty-one million, five hundred fifty-five thousand, six hundred sixty-three".