40121055873465 has 128 divisors (see below), whose sum is σ = 76126081747968. Its totient is φ = 17660992204800.

The previous prime is 40121055873463. The next prime is 40121055873583. The reversal of 40121055873465 is 56437855012104.

It is not a de Polignac number, because 40121055873465 - 2¹ = 40121055873463 is a prime.

It is a super-2 number, since 2×40121055873465² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40121055873463) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 956221267 + ... + 956263223.

It is an arithmetic number, because the mean of its divisors is an integer number (594735013656).

Almost surely, 2^{40121055873465} is an apocalyptic number.

It is an amenable number.

40121055873465 is a deficient number, since it is larger than the sum of its proper divisors (36005025874503).

40121055873465 is a wasteful number, since it uses less digits than its factorization.

40121055873465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44547.

The product of its (nonzero) digits is 4032000, while the sum is 51.

The spelling of 40121055873465 in words is "forty trillion, one hundred twenty-one billion, fifty-five million, eight hundred seventy-three thousand, four hundred sixty-five".