21019019614 has 32 divisors (see below), whose sum is σ = 33118606080. Its totient is φ = 9985800000.

The previous prime is 21019019603. The next prime is 21019019633. The reversal of 21019019614 is 41691091012.

It is a self number, because there is not a number n which added to its sum of digits gives 21019019614.

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, 4720089 + ... + 4724539.

It is an arithmetic number, because the mean of its divisors is an integer number (1034956440).

Almost surely, 2^21019019614 is an apocalyptic number.

21019019614 is a deficient number, since it is larger than the sum of its proper divisors (12099586466).

21019019614 is a wasteful number, since it uses less digits than its factorization.

21019019614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136.

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 21019019614 in words is "twenty-one billion, nineteen million, nineteen thousand, six hundred fourteen".