19851613454883 has 24 divisors (see below), whose sum is σ = 30821967668160. Its totient is φ = 11332096461840.

The previous prime is 19851613454807. The next prime is 19851613454923. The reversal of 19851613454883 is 38845431615891.

It is not a de Polignac number, because 19851613454883 - 2⁸ = 19851613454627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19851613454683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69396393 + ... + 69681866.

It is an arithmetic number, because the mean of its divisors is an integer number (1284248652840).

Almost surely, 2^{19851613454883} is an apocalyptic number.

19851613454883 is a deficient number, since it is larger than the sum of its proper divisors (10970354213277).

19851613454883 is a wasteful number, since it uses less digits than its factorization.

19851613454883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139079247 (or 139079240 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 66.

The spelling of 19851613454883 in words is "nineteen trillion, eight hundred fifty-one billion, six hundred thirteen million, four hundred fifty-four thousand, eight hundred eighty-three".