40001212450455 has 64 divisors (see below), whose sum is σ = 65634875849088. Its totient is φ = 20795990261760.

The previous prime is 40001212450403. The next prime is 40001212450561. The reversal of 40001212450455 is 55405421210004.

It is a happy number.

It is not a de Polignac number, because 40001212450455 - 2¹³ = 40001212442263 is a prime.

It is a super-2 number, since 2×40001212450455² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1081183017 + ... + 1081220013.

It is an arithmetic number, because the mean of its divisors is an integer number (1025544935142).

Almost surely, 2^{40001212450455} is an apocalyptic number.

40001212450455 is a deficient number, since it is larger than the sum of its proper divisors (25633663398633).

40001212450455 is a wasteful number, since it uses less digits than its factorization.

40001212450455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47636.

The product of its (nonzero) digits is 32000, while the sum is 33.

Adding to 40001212450455 its reverse (55405421210004), we get a palindrome (95406633660459).

The spelling of 40001212450455 in words is "forty trillion, one billion, two hundred twelve million, four hundred fifty thousand, four hundred fifty-five".