40621356416 has 32 divisors (see below), whose sum is σ = 83535862080. Its totient is φ = 19655493120.

The previous prime is 40621356371. The next prime is 40621356421. The reversal of 40621356416 is 61465312604.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 40621356416.

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, 5114651 + ... + 5122586.

It is an arithmetic number, because the mean of its divisors is an integer number (2610495690).

Almost surely, 2^40621356416 is an apocalyptic number.

It is an amenable number.

40621356416 is an abundant number, since it is smaller than the sum of its proper divisors (42914505664).

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

40621356416 is a wasteful number, since it uses less digits than its factorization.

40621356416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10237282 (or 10237270 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 40621356416 in words is "forty billion, six hundred twenty-one million, three hundred fifty-six thousand, four hundred sixteen".