1620634936011 has 16 divisors (see below), whose sum is σ = 2659503485184. Its totient is φ = 854840405664.

The previous prime is 1620634936009. The next prime is 1620634936027. The reversal of 1620634936011 is 1106394360261.

It is a happy number.

It is not a de Polignac number, because 1620634936011 - 2¹ = 1620634936009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1620634936091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2968195581 + ... + 2968196126.

It is an arithmetic number, because the mean of its divisors is an integer number (166218967824).

Almost surely, 2^{1620634936011} is an apocalyptic number.

1620634936011 is a deficient number, since it is larger than the sum of its proper divisors (1038868549173).

1620634936011 is a wasteful number, since it uses less digits than its factorization.

1620634936011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936391730.

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 1620634936011 in words is "one trillion, six hundred twenty billion, six hundred thirty-four million, nine hundred thirty-six thousand, eleven".