403055516551 has 4 divisors (see below), whose sum is σ = 410660337672. Its totient is φ = 395450695432.

The previous prime is 403055516519. The next prime is 403055516573. The reversal of 403055516551 is 155615550304.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 403055516551 - 2⁵ = 403055516519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403055516251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3802410481 + ... + 3802410586.

It is an arithmetic number, because the mean of its divisors is an integer number (102665084418).

Almost surely, 2^403055516551 is an apocalyptic number.

403055516551 is a deficient number, since it is larger than the sum of its proper divisors (7604821121).

403055516551 is an equidigital number, since it uses as much as digits as its factorization.

403055516551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604821120.

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 403055516551 in words is "four hundred three billion, fifty-five million, five hundred sixteen thousand, five hundred fifty-one".