1965905480155 has 8 divisors (see below), whose sum is σ = 2359119479184. Its totient is φ = 1572702448800.

The previous prime is 1965905480111. The next prime is 1965905480233. The reversal of 1965905480155 is 5510845095691.

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

It is not a de Polignac number, because 1965905480155 - 2¹³ = 1965905471963 is a prime.

It is a super-2 number, since 2×1965905480155² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1965905480155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2342281 + ... + 3068890.

It is an arithmetic number, because the mean of its divisors is an integer number (294889934898).

Almost surely, 2^{1965905480155} is an apocalyptic number.

1965905480155 is a deficient number, since it is larger than the sum of its proper divisors (393213999029).

1965905480155 is an equidigital number, since it uses as much as digits as its factorization.

1965905480155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483837.

The product of its (nonzero) digits is 9720000, while the sum is 58.

The spelling of 1965905480155 in words is "one trillion, nine hundred sixty-five billion, nine hundred five million, four hundred eighty thousand, one hundred fifty-five".