40121667067455 has 80 divisors (see below), whose sum is σ = 72107770664160. Its totient is φ = 21342908132352.

The previous prime is 40121667067453. The next prime is 40121667067457. The reversal of 40121667067455 is 55476076612104.

40121667067455 is a `hidden beast` number, since 4 + 0 + 1 + 2 + 1 + 66 + 70 + 67 + 455 = 666.

It is an interprime number because it is at equal distance from previous prime (40121667067453) and next prime (40121667067457).

It is not a de Polignac number, because 40121667067455 - 2¹ = 40121667067453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40121667067453) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1683438219 + ... + 1683462051.

It is an arithmetic number, because the mean of its divisors is an integer number (901347133302).

Almost surely, 2^{40121667067455} is an apocalyptic number.

40121667067455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40121667067455 is a deficient number, since it is larger than the sum of its proper divisors (31986103596705).

40121667067455 is a wasteful number, since it uses less digits than its factorization.

40121667067455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34422 (or 34413 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 40121667067455 in words is "forty trillion, one hundred twenty-one billion, six hundred sixty-seven million, sixty-seven thousand, four hundred fifty-five".