40121250355545 has 32 divisors (see below), whose sum is σ = 67580885729280. Its totient is φ = 20269313588160.

The previous prime is 40121250355499. The next prime is 40121250355561. The reversal of 40121250355545 is 54555305212104.

It is a happy number.

It is not a de Polignac number, because 40121250355545 - 2⁹ = 40121250355033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40121250355497 and 40121250355506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6258919 + ... + 10927788.

It is an arithmetic number, because the mean of its divisors is an integer number (2111902679040).

Almost surely, 2^{40121250355545} is an apocalyptic number.

It is an amenable number.

40121250355545 is a deficient number, since it is larger than the sum of its proper divisors (27459635373735).

40121250355545 is a wasteful number, since it uses less digits than its factorization.

40121250355545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17194925.

The product of its (nonzero) digits is 600000, while the sum is 42.

Adding to 40121250355545 its reverse (54555305212104), we get a palindrome (94676555567649).

The spelling of 40121250355545 in words is "forty trillion, one hundred twenty-one billion, two hundred fifty million, three hundred fifty-five thousand, five hundred forty-five".