1623135111261 has 8 divisors (see below), whose sum is σ = 2196481344864. Its totient is φ = 1065939475920.

The previous prime is 1623135111259. The next prime is 1623135111289. The reversal of 1623135111261 is 1621115313261.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1623135111261 - 2¹ = 1623135111259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623135111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4037649330 + ... + 4037649731.

It is an arithmetic number, because the mean of its divisors is an integer number (274560168108).

Almost surely, 2^{1623135111261} is an apocalyptic number.

It is an amenable number.

1623135111261 is a deficient number, since it is larger than the sum of its proper divisors (573346233603).

1623135111261 is an equidigital number, since it uses as much as digits as its factorization.

1623135111261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8075299131.

The product of its digits is 6480, while the sum is 33.

The spelling of 1623135111261 in words is "one trillion, six hundred twenty-three billion, one hundred thirty-five million, one hundred eleven thousand, two hundred sixty-one".