19700154912 has 96 divisors (see below), whose sum is σ = 52422890688. Its totient is φ = 6476829696.

The previous prime is 19700154907. The next prime is 19700154913. The reversal of 19700154912 is 21945100791.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×19700154912² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19700154913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5838858 + ... + 5842230.

It is an arithmetic number, because the mean of its divisors is an integer number (546071778).

Almost surely, 2^19700154912 is an apocalyptic number.

19700154912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19700154912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26211445344).

19700154912 is an abundant number, since it is smaller than the sum of its proper divisors (32722735776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19700154912 is a wasteful number, since it uses less digits than its factorization.

19700154912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4202 (or 4194 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 39.

The spelling of 19700154912 in words is "nineteen billion, seven hundred million, one hundred fifty-four thousand, nine hundred twelve".