1406633020655 has 16 divisors (see below), whose sum is σ = 1731147241824. Its totient is φ = 1096578731520.

The previous prime is 1406633020643. The next prime is 1406633020673. The reversal of 1406633020655 is 5560203366041.

It is not a de Polignac number, because 1406633020655 - 2³⁸ = 1131755113711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 15 ways as a sum of consecutive naturals, for example, 3827597 + ... + 4178966.

It is an arithmetic number, because the mean of its divisors is an integer number (108196702614).

Almost surely, 2^{1406633020655} is an apocalyptic number.

1406633020655 is a deficient number, since it is larger than the sum of its proper divisors (324514221169).

1406633020655 is an equidigital number, since it uses as much as digits as its factorization.

1406633020655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8007466.

The product of its (nonzero) digits is 388800, while the sum is 41.

Adding to 1406633020655 its reverse (5560203366041), we get a palindrome (6966836386696).

The spelling of 1406633020655 in words is "one trillion, four hundred six billion, six hundred thirty-three million, twenty thousand, six hundred fifty-five".