40178803455 has 48 divisors (see below), whose sum is σ = 79683599424. Its totient is φ = 18346383360.

The previous prime is 40178803439. The next prime is 40178803499. The reversal of 40178803455 is 55430887104.

It is not a de Polignac number, because 40178803455 - 2⁴ = 40178803439 is a prime.

It is a super-2 number, since 2×40178803455² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 40178803455.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 203535 + ... + 348975.

It is an arithmetic number, because the mean of its divisors is an integer number (1660074988).

Almost surely, 2^40178803455 is an apocalyptic number.

40178803455 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40178803455 is a deficient number, since it is larger than the sum of its proper divisors (39504795969).

40178803455 is a wasteful number, since it uses less digits than its factorization.

40178803455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146336 (or 146333 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 40178803455 in words is "forty billion, one hundred seventy-eight million, eight hundred three thousand, four hundred fifty-five".