40321998812 has 12 divisors (see below), whose sum is σ = 70591395336. Its totient is φ = 20153028720.

The previous prime is 40321998803. The next prime is 40321998823. The reversal of 40321998812 is 21889912304.

It is a super-2 number, since 2×40321998812² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

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, 1981283 + ... + 2001530.

It is an arithmetic number, because the mean of its divisors is an integer number (5882616278).

Almost surely, 2^40321998812 is an apocalyptic number.

It is an amenable number.

40321998812 is a deficient number, since it is larger than the sum of its proper divisors (30269396524).

40321998812 is a wasteful number, since it uses less digits than its factorization.

40321998812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985348 (or 3985346 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 40321998812 in words is "forty billion, three hundred twenty-one million, nine hundred ninety-eight thousand, eight hundred twelve".