40121663452 has 24 divisors (see below), whose sum is σ = 75659699696. Its totient is φ = 18506475648.

The previous prime is 40121663429. The next prime is 40121663489. The reversal of 40121663452 is 25436612104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146658 + ... + 318985.

Almost surely, 2^40121663452 is an apocalyptic number.

It is an amenable number.

40121663452 is a deficient number, since it is larger than the sum of its proper divisors (35538036244).

40121663452 is a wasteful number, since it uses less digits than its factorization.

40121663452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467317 (or 467315 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 40121663452 in words is "forty billion, one hundred twenty-one million, six hundred sixty-three thousand, four hundred fifty-two".