20119165720 has 16 divisors (see below), whose sum is σ = 45268122960. Its totient is φ = 8047666272.

The previous prime is 20119165711. The next prime is 20119165739. The reversal of 20119165720 is 2756191102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251489532 + ... + 251489611.

It is an arithmetic number, because the mean of its divisors is an integer number (2829257685).

Almost surely, 2^20119165720 is an apocalyptic number.

20119165720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20119165720 is an abundant number, since it is smaller than the sum of its proper divisors (25148957240).

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

20119165720 is a wasteful number, since it uses less digits than its factorization.

20119165720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502979154 (or 502979150 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 20119165720 in words is "twenty billion, one hundred nineteen million, one hundred sixty-five thousand, seven hundred twenty".