40507421455 has 8 divisors (see below), whose sum is σ = 48630943872. Its totient is φ = 32391245088.

The previous prime is 40507421417. The next prime is 40507421477. The reversal of 40507421455 is 55412470504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40507421455 is a prime.

It is a Duffinian number.

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, 1824372 + ... + 1846441.

It is an arithmetic number, because the mean of its divisors is an integer number (6078867984).

Almost surely, 2^40507421455 is an apocalyptic number.

40507421455 is a deficient number, since it is larger than the sum of its proper divisors (8123522417).

40507421455 is a wasteful number, since it uses less digits than its factorization.

40507421455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673025.

The product of its (nonzero) digits is 112000, while the sum is 37.

Adding to 40507421455 its reverse (55412470504), we get a palindrome (95919891959).

The spelling of 40507421455 in words is "forty billion, five hundred seven million, four hundred twenty-one thousand, four hundred fifty-five".