40961517478 has 8 divisors (see below), whose sum is σ = 70219744272. Its totient is φ = 17554936056.

The previous prime is 40961517473. The next prime is 40961517491. The reversal of 40961517478 is 87471516904.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40961517473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1462911325 + ... + 1462911352.

It is an arithmetic number, because the mean of its divisors is an integer number (8777468034).

Almost surely, 2^40961517478 is an apocalyptic number.

40961517478 is a deficient number, since it is larger than the sum of its proper divisors (29258226794).

40961517478 is a wasteful number, since it uses less digits than its factorization.

40961517478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925822686.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 40961517478 in words is "forty billion, nine hundred sixty-one million, five hundred seventeen thousand, four hundred seventy-eight".