70545793920 has 384 divisors, whose sum is σ = 267971911200. Its totient is φ = 15730606080.

The previous prime is 70545793909. The next prime is 70545793921. The reversal of 70545793920 is 2939754507.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70545793921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3848136 + ... + 3866424.

Almost surely, 2^70545793920 is an apocalyptic number.

70545793920 is a gapful number since it is divisible by the number (70) 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 70545793920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133985955600).

70545793920 is an abundant number, since it is smaller than the sum of its proper divisors (197426117280).

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

70545793920 is a wasteful number, since it uses less digits than its factorization.

70545793920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366 (or 18347 counting only the distinct ones).

The product of its (nonzero) digits is 2381400, while the sum is 51.

The spelling of 70545793920 in words is "seventy billion, five hundred forty-five million, seven hundred ninety-three thousand, nine hundred twenty".