40463890646 has 8 divisors (see below), whose sum is σ = 62788795920. Its totient is φ = 19534292008.

The previous prime is 40463890631. The next prime is 40463890651. The reversal of 40463890646 is 64609836404.

It is a happy number.

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

It is a super-2 number, since 2×40463890646² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40463890594 and 40463890603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348826586 + ... + 348826701.

It is an arithmetic number, because the mean of its divisors is an integer number (7848599490).

Almost surely, 2^40463890646 is an apocalyptic number.

40463890646 is a deficient number, since it is larger than the sum of its proper divisors (22324905274).

40463890646 is a wasteful number, since it uses less digits than its factorization.

40463890646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697653318.

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 40463890646 in words is "forty billion, four hundred sixty-three million, eight hundred ninety thousand, six hundred forty-six".