40401554455 has 4 divisors (see below), whose sum is σ = 48481865352. Its totient is φ = 32321243560.

The previous prime is 40401554449. The next prime is 40401554471. The reversal of 40401554455 is 55445510404.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40401554455 - 2³¹ = 38254070807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4040155441 + ... + 4040155450.

It is an arithmetic number, because the mean of its divisors is an integer number (12120466338).

Almost surely, 2^40401554455 is an apocalyptic number.

40401554455 is a deficient number, since it is larger than the sum of its proper divisors (8080310897).

40401554455 is an equidigital number, since it uses as much as digits as its factorization.

40401554455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080310896.

The product of its (nonzero) digits is 160000, while the sum is 37.

It can be divided in two parts, 4040 and 1554455, that added together give a triangular number (1558495 = T₁₇₆₅).

The spelling of 40401554455 in words is "forty billion, four hundred one million, five hundred fifty-four thousand, four hundred fifty-five".