40822154621 has 16 divisors (see below), whose sum is σ = 43468170480. Its totient is φ = 38203944960.

The previous prime is 40822154617. The next prime is 40822154627. The reversal of 40822154621 is 12645122804.

It can be written as a sum of positive squares in 8 ways, for example, as 8512092121 + 32310062500 = 92261^2 + 179750^2 .

It is not a de Polignac number, because 40822154621 - 2² = 40822154617 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 (40822154627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2194841 + ... + 2213361.

It is an arithmetic number, because the mean of its divisors is an integer number (2716760655).

Almost surely, 2^40822154621 is an apocalyptic number.

It is an amenable number.

40822154621 is a deficient number, since it is larger than the sum of its proper divisors (2646015859).

40822154621 is a wasteful number, since it uses less digits than its factorization.

40822154621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19264.

The product of its (nonzero) digits is 30720, while the sum is 35.

The spelling of 40822154621 in words is "forty billion, eight hundred twenty-two million, one hundred fifty-four thousand, six hundred twenty-one".