1403220540551 has 4 divisors (see below), whose sum is σ = 1403304920832. Its totient is φ = 1403136160272.

The previous prime is 1403220540511. The next prime is 1403220540571. The reversal of 1403220540551 is 1550450223041.

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 1403220540551 - 2²² = 1403216346247 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 (1403220540511) 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, 42165191 + ... + 42198456.

It is an arithmetic number, because the mean of its divisors is an integer number (350826230208).

Almost surely, 2^{1403220540551} is an apocalyptic number.

1403220540551 is a deficient number, since it is larger than the sum of its proper divisors (84380281).

1403220540551 is an equidigital number, since it uses as much as digits as its factorization.

1403220540551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84380280.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1403220540551 its reverse (1550450223041), we get a palindrome (2953670763592).

The spelling of 1403220540551 in words is "one trillion, four hundred three billion, two hundred twenty million, five hundred forty thousand, five hundred fifty-one".