40919218461 has 24 divisors (see below), whose sum is σ = 65143513344. Its totient is φ = 24543855360.

The previous prime is 40919218453. The next prime is 40919218507. The reversal of 40919218461 is 16481291904.

It is a happy number.

40919218461 is a `hidden beast` number, since 4 + 0 + 91 + 92 + 18 + 461 = 666.

It is not a de Polignac number, because 40919218461 - 2³ = 40919218453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40919218421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2120941 + ... + 2140146.

It is an arithmetic number, because the mean of its divisors is an integer number (2714313056).

Almost surely, 2^40919218461 is an apocalyptic number.

It is an amenable number.

40919218461 is a deficient number, since it is larger than the sum of its proper divisors (24224294883).

40919218461 is a wasteful number, since it uses less digits than its factorization.

40919218461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261201 (or 4261198 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 40919218461 in words is "forty billion, nine hundred nineteen million, two hundred eighteen thousand, four hundred sixty-one".