128973203760 has 40 divisors (see below), whose sum is σ = 399816932400. Its totient is φ = 34392854272.

The previous prime is 128973203693. The next prime is 128973203761. The reversal of 128973203760 is 67302379821.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (128973203761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268693935 + ... + 268694414.

It is an arithmetic number, because the mean of its divisors is an integer number (9995423310).

Almost surely, 2^128973203760 is an apocalyptic number.

128973203760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128973203760 is an abundant number, since it is smaller than the sum of its proper divisors (270843728640).

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

128973203760 is a wasteful number, since it uses less digits than its factorization.

128973203760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537388365 (or 537388359 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 128973203760 in words is "one hundred twenty-eight billion, nine hundred seventy-three million, two hundred three thousand, seven hundred sixty".