20747390112 has 48 divisors (see below), whose sum is σ = 60513223680. Its totient is φ = 6915796416.

The previous prime is 20747390099. The next prime is 20747390129. The reversal of 20747390112 is 21109374702.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12005728 + ... + 12007455.

It is an arithmetic number, because the mean of its divisors is an integer number (1260692160).

Almost surely, 2^20747390112 is an apocalyptic number.

It is an amenable number.

20747390112 is an abundant number, since it is smaller than the sum of its proper divisors (39765833568).

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

20747390112 is a wasteful number, since it uses less digits than its factorization.

20747390112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24013202 (or 24013188 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 20747390112 in words is "twenty billion, seven hundred forty-seven million, three hundred ninety thousand, one hundred twelve".